Fort Pitt Blockhouse, built by the British in 1764, is the oldest extant structure in Pittsburgh.
Monongahela River scene, 1857
Downtown facade memorializing Pittsburgh's industrial heritage with an image of legendary steelworker Joe Magarac
Pittsburgh in 1874, by Otto Krebs
Burning of Union Depot, Pittsburgh, during the Pittsburgh railroad strike of 1877
Pittsburgh in 1903
Downtown Pittsburgh and the Duquesne Incline from Mt. Washington
Pittsburgh's 90 distinct neighborhoods
Downtown Pittsburgh from Station Square
The Carnegie Library, Museums of Art and Natural History (foreground), Carnegie Mellon University (background)
The North Side
Bird's-eye view of Pittsburgh, 1902
The Shadyside neighborhood
Panorama of Pittsburgh, PA from the Duquesne Incline which shows the confluence of the Allegheny (left) and the Monongahela (right) rivers which merge to form the Ohio River (lower left)
ALCOSAN Treatment Plant
Map of racial distribution in Pittsburgh, 2010 U.S. census. Each dot is 25 people:
Phipps Conservatory
Benedum Center
Pittsburgh from the West End Overlook
PNC Park, home of the Pittsburgh Pirates
Heinz Field, home of the Pittsburgh Steelers and the Pittsburgh Panthers (football)
Petersen Events Center, home of Pittsburgh Panthers basketball
Palumbo Center, home of Duquesne Dukes basketball
Pittsburgh Vintage Grand Prix
The Pittsburgh City-County Building, the seat of government of the City of Pittsburgh.
2020 Presidential Election by Precinct Biden:     Trump:
A Ford Taurus and a Chevrolet Impala belonging to the Pittsburgh Bureau of Police
The University of Pittsburgh
Carnegie Mellon University
KDKA studios at Gateway Center
UPMC's flagship, UPMC Presbyterian
Allegheny General, the flagship of the Allegheny Health Network
Pittsburgh's numerous bridges visible from the air
The Steel Plaza subway station
Penn Station was built in 1903

City in the Commonwealth of Pennsylvania in the United States and the county seat of Allegheny County.

- Pittsburgh

500 related topics



In geography, a confluence (also: conflux) occurs where two or more flowing bodies of water join to form a single channel.

Confluence of the Bhagirathi and Alaknanda Rivers to produce the Ganges at Devprayag, India
The same confluence viewed from upstream at a different time; note the swirl of sediment from the Alaknanda.
Hydrodynamic features of a river/flume confluence can be separated into six identifiable distinct zones, also called confluence flow zones.
The fountain at Point State Park in Pittsburgh, at the apex of the confluence of the Allegheny (top) and the Monongahela
The White Nile and Blue Nile merge at Khartoum; April 2013 satellite view
The Nam Khan flows into the Mekong at Luang Prabang in Laos
The confluence of the Jialing and the Yangtze in Chongqing. The Yangtze flows left to right across the bottom of the image.
The Seine becomes a single channel at the west end of the Île de la Cité in Paris. The Pont Neuf can be seen.
The Mosel flows into the Rhine at Koblenz.
The triple confluence in Passau; from left to right, the Inn, the Danube, and the Ilz.
Confluence of Oka and Volga rivers
The confluence of the Allegheny and Monongahela at Pittsburgh, forming the Ohio
The Ohio flows into the Mississippi at Cairo.
The Rideau Falls in Ottawa, where the Rideau River tumbles into Ottawa River at its mouth.
The confluence of the Rio Negro (black) and the Rio Solimões (turbid) near Manaus, Brazil.
Confluence of canals
This simplified diagram shows how a section of the Industrial Canal in New Orleans also serves as the channel for the Gulf Intracoastal Waterway and the Mississippi River-Gulf Outlet Canal. At the bottom, a portion of the Intracoastal is also shown to be "confluent" with the Mississippi River.

A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the source of a river of a new name (such as the confluence of the Monongahela and Allegheny rivers at Pittsburgh, forming the Ohio); or where two separated channels of a river (forming a river island) rejoin at the downstream end.


U.S. state spanning the Mid-Atlantic, Northeastern, and Appalachian regions of the United States.

William Penn, a Quaker and son of a prominent admiral, founded Pennsylvania in 1681
Shelter House in Emmaus, constructed in 1734 by Pennsylvania German settlers, is believed to be the oldest continuously occupied building structure in the Lehigh Valley and one of the oldest in Pennsylvania.
Independence Hall in Philadelphia, where the United States Declaration of Independence and the United States Constitution were drafted and adopted in 1776 and 1787-88, respectively.
The July 1-3, 1863 Battle of Gettysburg in Gettysburg, which was a turning point in the Union Army's ultimate victory in the American Civil War, is depicted in this 1887 Thure de Thulstrup painting. Gettysburg was the Civil War's deadliest battle with 51,118 total casualties.
On November 19, 1863, U.S. President Abraham Lincoln (center, facing camera) arrived in Gettysburg and delivered the Gettysburg Address, considered one of the best-known speeches in American history.
Hazleton coal miners in 1900. Coal mining was a major economic activity in Pennsylvania in the 19th and 20th centuries.
Anti-nuclear protest in Harrisburg following the March 28, 1979 Three Mile Island accident in Londonderry Township, September 1979
The crash site of Flight 93 in Somerset County following the September 11 attacks
South Mountain with Allentown in the foreground, December 2010
Worlds End State Park in Sullivan County, June 2008
Köppen climate types in Pennsylvania
Autumn in North Branch Township in Wyoming County, October 2011
Allentown, the state's third largest city, May 2010
Pennsylvania jurist John Morton (1725–1777) was one of nine Pennsylvanians, the most of any of the Thirteen Colonies, to sign the Declaration of Independence. Other Pennsylvanians to sign the Declaration include George Clymer, Benjamin Franklin, Robert Morris, George Ross, Benjamin Rush, James Smith, George Taylor, and James Wilson.
Pennsylvania's population growth from 1790 to 2000
Pennsylvania's population distribution as of the 2000 census
An Amish family riding in a traditional Amish buggy in Lancaster County, May 2004
Bethlehem Steel in Bethlehem was one of the world's leading steel manufacturers for most of the 19th and 20th century. In 1982, it discontinued most of its operations, declared bankruptcy in 2001, and was dissolved in 2003.
Geo map of average income by location in Pennsylvania. Data shown is from the 2014 American Community Survey five-year estimate.
Wind Creek Bethlehem casino in Bethlehem, March 2014
Pennsylvania's 67 counties
The Pennsylvania State Capitol, built in 1906 in Harrisburg, June 2020
South Philadelphia High School on Broad Street in South Philadelphia, February 2010
Benjamin Franklin statue on the campus of the University of Pennsylvania, an Ivy League institution in Philadelphia and one of the top universities in the world, August 2007
Dorney Park and Wildwater Kingdom's Steel Force and Thunderhawk roller coasters in Allentown. Steel Force is the tenth longest steel rollercoaster in the world.
Road and rail map of Pennsylvania
U.S. Route 220 as it passes through Lamar Township, August 2010
30th Street Station in Philadelphia, Amtrak's third busiest train station in the nation, July 2016
The Pennsylvanian navigating the historic Horseshoe Curve near Altoona, May 2013
Philadelphia International Airport is the busiest airport in Pennsylvania and the 21st busiest overall in the United States
The Philadelphia Eagles are presented with the Vince Lombardi Trophy after winning Super Bowl LII, February 4, 2018
Citizens Bank Park in South Philadelphia, home of the Philadelphia Phillies, May 2009
NASCAR racing at Pocono Raceway in Long Pond, September 2006
Beaver Stadium, a 106,572 capacity stadium in University Park, is the home field of the Penn State Nittany Lions.
Geno's Steaks in South Philadelphia is widely credited with inventing the cheesesteak in 1933.
Hershey Chocolate Factory in Hershey, August 1976

Pennsylvania's three largest cities are Philadelphia (1.6 million), Pittsburgh (302,971), and Allentown (125,845).

Ohio River

981 mi long river in the United States.

Steamboat Morning Star, a Louisville and Evansville mail packet, in 1858.
Built between 1847 and 1849, the Wheeling Suspension Bridge was the first bridge across the river and a crucial part of the National Road.
Cave-in-rock, view on the Ohio (circa 1832, Cave-In-Rock, Illinois): aquatint by Karl Bodmer from the book Maximilian, Prince of Wied's Travels in the Interior of North America, during the years 1832–1834
Silver Bridge in Point Pleasant, West Virginia which collapsed into the Ohio River on December 15, 1967, killing 46 people.
A barge heads east on the Ohio River in Louisville, Kentucky.
The confluence of the Mississippi and Ohio rivers is at Cairo, Illinois.
The Ohio River as seen from Fredonia, Indiana.
Natural-color satellite image of the Wabash-Ohio confluence.
Lawrenceburg, Indiana, is one of many towns that use the Ohio as a shipping avenue.
Glacial Lake Ohio
The Allegheny River, left, and Monongahela River join to form the Ohio River at Pittsburgh, Pennsylvania, the largest metropolitan area on the river.
Louisville, Kentucky, The deepest point of the Ohio River is a scour hole just below Cannelton locks and dam (river mile 720.7).
A barge hauls coal in the Louisville and Portland Canal, the only artificial portion of the Ohio River.
Cincinnati skyline showing the John A. Roebling Suspension Bridge to Covington, Kentucky.
Carl Perkins Bridge in Portsmouth, Ohio with Ohio River and Scioto River tributary on right.
The Ohio River seen at Sciotoville, from the "Geography of Ohio," 1923

Completion of the Louisville and Portland Canal in 1830 (and later the McAlpine Locks and Dam), bypassing the rapids, allowed even larger commercial and modern navigation from the Forks of the Ohio at Pittsburgh to the Port of New Orleans at the mouth of the Mississippi on the Gulf of Mexico.

Downtown Pittsburgh

The Smithfield Street Bridge
Famous mural on the 300 Sixth Street building
Wood Street.
At least seventeen of Pittsburgh's bridges are visible in this aerial photo.
Sixth Avenue in Downtown Pittsburgh
Pittsburgh's number of jobs is generally stable.
View of the sweeping roofline of the David L. Lawrence Convention Center on the Allegheny River
Market Square

Downtown Pittsburgh, colloquially referred to as the Golden Triangle, and officially the Central Business District, is the urban downtown center of Pittsburgh.

Carnegie Museums of Pittsburgh

The Carnegie Institute serves as the headquarters of the Carnegie Museums
Motto "Free to the people" above the Carnegie Library entrance
Andy Warhol Museum
Carnegie Museum of Art's Sarah Scaife Gallery annex. Designed by Edward Larrabee Barnes and Associates.
Carnegie Museum of Natural History
Carnegie Science Center

Carnegie Museums of Pittsburgh are four museums that are operated by the Carnegie Institute headquartered in the Carnegie Institute complex in the Oakland neighborhood of Pittsburgh, Pennsylvania.

Carnegie Mellon University

The main campus in Pittsburgh as seen from the 36th floor of the Cathedral of Learning at the University of Pittsburgh, August 2015.
Hamerschlag, Roberts, and Scott Halls are three of the teaching facilities of the College of Engineering
Wean Hall, home of the world's first internet-enabled soda vending machine.
The Gates Hillman Complex, which houses the School of Computer Science.
Cohon University Center, which contains an indoor swimming pool, bookstore, student club facilities, gym, and cafeteria.
The Tepper Quadrangle, which includes the new home of the Tepper School of Business, opened in 2018.
Posner Hall, former home of the Tepper School of Business
The Scarab lunar rover is being developed by the RI.
The Software Engineering Institute building on Fifth Avenue.
Part of Carnegie Mellon's Education City campus in Qatar.
Margaret Morrison Carnegie Hall, home of the Carnegie Mellon School of Architecture and Carnegie Mellon School of Design
Inside the Gates-Hillman Complex of the School of Computer Science.
Carnegie Mellon's Entertainment Technology Center.
Hunt Library is the largest library on Carnegie Mellon's Pittsburgh campus.
Simplified evolution of Unix systems. The Mach kernel was a fork from BSD 4.3 that led to NeXTSTEP / OPENSTEP, upon which macOS and iOS is based.
The Fence
Two pushers exchange the buggy for Kappa Delta Rho on the first hill of Sweepstakes.
A Mobot competing in the annual Mobot challenge
Carnegie Mellon tennis courts.
Football at Gesling Stadium.
Charles Wilson, former US Secretary of Defense
John Forbes Nash, winner of the 1994 Nobel Prize in Economics
Edgar Mitchell, NASA astronaut and sixth man to walk on the moon
David Tepper, billionaire hedge fund investor and owner of the Carolina Panthers
Andreas Bechtolsheim, co-founder of Sun Microsystems
James Gosling, inventor of Java
Andy Warhol, pop artist
Stephanie Kwolek, Inventor of Kevlar
Charles Geschke, chairman and co-founder of Adobe Systems
Randy Pausch, author of The Last Lecture
Michael Chabon, Pulitzer Prize-winning novelist (Did not graduate)
George A. Romero, director of Night of the Living Dead and Dawn of the Dead
Josh Groban, singer-songwriter and actor (Did not graduate)
Van Dyke Parks, musician, composer, arranger, and producer (Did not graduate)
Henry Mancini, film composer and recipient of twenty Grammy Awards (Did not graduate)
Stephen Schwartz, musical theater composer for Wicked, Pippin, and Godspell
Kurt Vonnegut, author of Slaughterhouse-Five and Cat's Cradle (Did not graduate)
Zachary Quinto, actor known for Heroes and Star Trek
Holly Hunter, Academy Award-winning actress
Matt Bomer, actor known for White Collar, Magic Mike, and The Boys in the Band
Sutton Foster, Tony Award-winning actress for Thoroughly Modern Millie and Anything Goes; star of Younger
Ted Danson, Emmy Award-winning actor known for Cheers and CSI
Josh Gad, actor known for The Book of Mormon, Frozen, and Beauty and the Beast
Joe Manganiello, actor known for True Blood and Magic Mike
Steven Bochco, ten-time Emmy Award recipient
Cote de Pablo, actress known for NCIS

Carnegie Mellon University (CMU) is a private research university based in Pittsburgh, Pennsylvania.

University of Pittsburgh

Hugh Henry Brackenridge, founder of Pittsburgh Academy, the precursor to the University of Pittsburgh
The university in 1833 at its location on 3rd Avenue in downtown Pittsburgh
The Cathedral of Learning, the centerpiece of Pitt's campus and the tallest educational building in the Western Hemisphere
Jonas Salk developed the first polio vaccine at the University of Pittsburgh.
The lower campus, the traditional heart of the university, is typified by Gothic Revival architecture including Heinz Chapel (right) and the Stephen Foster Memorial (center foreground), but the 42-story Cathedral of Learning dominates most views across the Oakland neighborhood.
Heinz Memorial Chapel
The restored Louis XV mirrored ballroom of the Beaux-Arts styled William Pitt Union
The art gallery at the Frick Fine Arts Building
Trees Field
Thomas Starzl Biomedical Science Tower is connected to the med school and UPMC's flagship hospitals
Aerial view of the university and Oakland neighborhood; Carnegie Mellon University is at top-right
Then-Vice President of the United States Joe Biden speaks at the Peterson Events Center on April 5, 2016.
The Indian Classroom, one of 31 Nationality Rooms in the Cathedral of Learning
The 52 ft high, half acre (2,000 m²) Commons Room of the Cathedral of Learning serves as a major study and event space for the university and its students.
Salk Hall, where Jonas Salk's team performed the research that led to the first polio vaccine, is also the home of the School of Dental Medicine and School of Pharmacy.
Litchfield Towers, Pitt's largest and tallest residence hall
Sutherland Hall on the upper campus is named for legendary Pitt football coach Jock Sutherland.
Rock band Walk the Moon performs at Fall Fest 2015
Varsity Walk
Pitt's Stephen Foster Memorial contains two theaters
The Music Building once served as home to the original studio for Mr. Rogers' Neighborhood.
Student media and other organizations are largely headquartered within the William Pitt Union, seen here with the Millennium Panther.
The Oakland Zoo, Pitt basketball's student cheering club
Cheering on the Pitt football team has traditionally been one of the most celebrated activities at the university, as depicted in this cover art from a 1915 game program.
Pitt Football playing Notre Dame at Heinz Field in 2015
Pitt basketball in the Petersen Events Center
The "Pitt script " logo is the primary logo of the University's athletics department. Since 1939, Pitt has used stylized versions of the signature of the City of Pittsburgh's namesake, William Pitt, 1st Earl of Chatham, as logos in various capacities.
Alumni Hall, home to the Office of Admissions and Financial Aid, and Alumni Relations
Samuel J. R. McMillan (1846), U.S. Senator from Minnesota
Andrew Mellon 49th U.S. Secretary of the Treasury
Philip Hench (M.D. 1920), recipient of the 1950 Nobel Prize in Medicine
Academy Award–winning dancer and actor, Gene Kelly (1933)
Olympic Gold-winning runner, John Woodruff (1939)
Paul Lauterbur (Ph.D. 1962), recipient of the 2003 Nobel Prize in Medicine
Orrin Hatch (J.D. 1962), U.S. Senator from Utah
Ben Cardin (B.A. 1964), U.S. Senator from Maryland
Wangari Maathai (M.Sc. 1965), recipient of the Nobel Peace Prize
Fred Rogers, television host
John Irving, bestselling author
Dan Marino (1983), football player
Michael Chabon (B.A. 1984), Pulitzer Prize–winning author
Vjosa Osmani (M.L. 2004, S.J.D. 2015), 5th President of Kosovo

The University of Pittsburgh (Pitt) is a public state-related research university in Pittsburgh, Pennsylvania.

Mid-Atlantic (United States)

Region of the United States generally located in the overlap between the Northeastern and Southeastern States.

Shipping containers at the Port Newark–Elizabeth Marine Terminal, part of the Port of New York and New Jersey.
New York
Washington, D.C.
A USGS fact-sheet interpretation of the Mid-Atlantic in terms of groundwater.<ref>Earl A. Greene et al. "Ground-Water Vulnerability to Nitrate Contamination in the Mid-Atlantic Region". USGS Fact Sheet FS 2004-3067. 2005. Retrieved 25 April 2013. Note: Although the locator map appears to exclude part of northwestern Pennsylvania, other more detailed maps in this article include all of the state.</ref>
An 1897 map displays an inclusive definition of the Mid-Atlantic region.
An 1886 "Harper's School Geography" map showing the region, exclusive of Virginia and West Virginia.
The U.S. Census Bureau Regions and Divisions, displaying an exclusive three-state definition of the Middle Atlantic.

Large numbers of German, Irish, Italian, Jewish, Polish, and other immigrants transformed the region, especially coastal cities such as New York City, Newark, Philadelphia, and Baltimore, but also interior cities such as Pittsburgh, Rochester, Albany, and Buffalo.

PNC Financial Services

Historic bank branch, located in Georgetown, Washington, D.C.
PNC Bank branch, located in the former headquarters of Riggs Bank on Pennsylvania Avenue, Washington, D.C.
PNC Bank branch, located in the historic National Bank of Washington building, in Washington, D.C.
PNC branch footprint, as of November 2021
PNC Bank Corporate Footprint
Former PNC Southgate Tower in Southgate, Michigan. PNC vacated the building in 2013.
1970s-era Pittsburgh National Bank logo, used until the 1982 merger to form PNC Bank.
PNC's offices in Troy, Michigan.
One PNC Plaza. PNC's former corporate headquarters in Downtown Pittsburgh.
Outside a branch in Freeport, Pennsylvania.
Three PNC Plaza, Pittsburgh
Two PNC Plaza, Pittsburgh
PNC Tower, Cincinnati, Ohio
PNC Plaza, Raleigh, North Carolina
PNC Plaza, Louisville, Kentucky
PNC Center, Cleveland
PNC Bank Building, Philadelphia
PNC Bank Building, Columbus, Ohio
PNC Center, Cincinnati
National City Bank Building, Toledo, Ohio

The PNC Financial Services Group, Inc. (stylized as PNC) is an American bank holding company and financial services corporation based in Pittsburgh, Pennsylvania.

Allegheny County, Pennsylvania

Located in the southwest of the U.S. state of Pennsylvania.

1680 British map of western Pennsylvania and Allegheny County from the Darlington Collection
The Allegheny County Courthouse
County Medical Examiner office
2020 Presidential Election by Township and City Biden:     Trump:
Employment by occupation in Allegheny County
Map of Allegheny County, Pennsylvania Public School Districts
Map of Allegheny County, Pennsylvania, with municipal labels showing cities and boroughs (red), Townships (white), and census-designated places (blue)

The county seat is Pittsburgh.