Allegheny County Jail

The Allegheny County Courthouse in downtown Pittsburgh, Pennsylvania, is part of a complex (along with the old Allegheny County Jail) designed by H. H. Richardson. The buildings are considered among the finest examples of the Romanesque Revival style for which Richardson is well known. The complex is bordered by wide thoroughfares named for city founders James Ross (Ross Street), John Forbes (Forbes Avenue) and James Grant (Grant Street). The current building, completed in 1888, was designated a National Historic Landmark in 1976. Richardson later referred to it as his "great achievement".

Allegheny County Office Building located at Ross Street and Forbes Avenue in downtown Pittsburgh, Pennsylvania, was built from 1929 to 1931. It was added to the List of Pittsburgh History and Landmarks Foundation Historic Landmarks in 2002.

The Try Street Terminal (now "Terminal 21 Apartments", a luxury loft-style apartment building) in the Central Business District of Pittsburgh, Pennsylvania, is former 1921 freight terminal and warehouse designed in the "commercial utilitarian" style. It was listed on the National Register of Historic Places in 2007.In 2011, the building and its streetscape were featured in the music video Black and Yellow.

Greater Pittsburgh is a populous region centered around its largest city and economic hub, Pittsburgh, Pennsylvania. The region encompasses Pittsburgh's urban core county, Allegheny, and six adjacent Pennsylvania counties: Armstrong, Beaver, Butler, Fayette, Washington, and Westmoreland in Western Pennsylvania, which constitutes the Pittsburgh, PA Metropolitan Statistical Area MSA as defined by the U.S. Census Bureau. As of the 2020 census, the Greater Pittsburgh region had a population of over 2.37 million people. Roughly one-fifth of the entire population of Pennsylvania resides within the region. The core city, Pittsburgh, has a population of 302,971, making it the second-largest city in the state. Over half of the region's population resides within Allegheny County, which has a population of 1.24 million and is the second-largest county in the state.

The Allegheny County Mortuary located at 542 Fourth Avenue in downtown Pittsburgh, Pennsylvania, was built in 1903. It was added to the List of City of Pittsburgh historic designations on September 26, 2002.

BNY Mellon Center is a 55-story skyscraper located at 500 Grant Street in downtown Pittsburgh, Pennsylvania. Standing 725 ft (221 m) tall, it is the second-tallest building in the city. Announced on March 27, 1980, the tower was completed in June 1984. It was initially planned to be the world headquarters of the Dravo Corporation (now Carmeuse Corporation) by its majority owner at the time and current neighbor U.S. Steel until Dravo was purchased in 1983. Upon opening, the building was named One Mellon Center after Mellon Financial Corporation, which used the tower as the company's global headquarters. In 2007, the company merged with Bank of New York to form The Bank of New York Mellon; the resulting corporation continues to use the building as one of its major offices. In 2008, the building was renamed to its current moniker as part of a branding initiative by The Bank of New York Mellon.Prominent features of the building include its eight-sided design and mansard roof. The tower is connected to the U.S. Steel Tower through a tunnel which passes through Steel Plaza subway station. BNY Mellon Center is the ninth-tallest building in Pennsylvania (as well as the second-tallest within the state outside of Philadelphia) and 195th-tallest skyscraper in the world, and also the building with the highest taxable property value in Allegheny County, surpassing even the U.S. Steel Tower. On clear days, it is possible to spot the building from as far as 50 miles away, usually from the top of Chestnut Ridge.

First Avenue is a station on Pittsburgh Regional Transit's light rail network. The station is part of the light rail's Downtown Pittsburgh free zone, and passengers embarking here may travel for free to any of the other stations within the zone (Steel Plaza, Wood Street, Gateway, North Side and Allegheny). The station was a new addition to the light rail system in 2001, located in the PNC Firstside Complex, just before the tracks dip into the subway tunnel. It was opened on November 16, 2001 to provide better access to the southern quarter of downtown, which includes city and state government offices, major office buildings such as Oxford Centre and the Grant Building, downtown educational facilities such as Point Park University, Duquesne University and the Art Institute of Pittsburgh, and the many smaller office structures that mark this area of the Golden Triangle. It cost $6.7 million to construct.

The Pittsburgh City-County Building is the seat of government for the City of Pittsburgh, and houses both Pittsburgh and Allegheny County offices. It is located in Downtown Pittsburgh at 414 Grant Street, Pittsburgh, Pennsylvania. Built from 1915-17 it is the third seat of government of Pittsburgh. Today the building is occupied mostly by Pittsburgh offices with Allegheny County located in adjacent county facilities. It also contains a courtroom used for the Pittsburgh sessions of the Supreme Court of Pennsylvania.

Carnegie Learning, Inc. is a provider of K-12 education solutions and services for math, literacy and ELA, world languages, and applied sciences. Carnegie Learning, Inc. is located in the Union Trust Building in Pittsburgh, PA.

The School of Pharmacy is one of the ten degree-granting divisions that comprise Duquesne University in Pittsburgh, Pennsylvania. The school's first pharmacy class matriculated in September 1925 under the leadership of the founding dean, Dr. Hugh C. Muldoon, and graduated in 1928. In May 2000, the School of Pharmacy graduated its first entry-level Doctor of Pharmacy class. The School of Pharmacy is housed in Duquesne University's Mellon Hall of Science, with new administrative, faculty, and student services offices located in the adjacent Bayer Learning Center.

The former Jones and Laughlin building is located at 200 Ross Street in the Downtown neighborhood of Pittsburgh, Pennsylvania. Built in 1907 in the Jacobean Revival architectural style, the building served as the headquarters of the Jones and Laughlin Steel Company from its construction until 1952 and currently holds offices for various governmental agencies in the City of Pittsburgh. It was designated a City of Pittsburgh Historic Landmark in 2020 and was listed on the National Register of Historic Places in 2021.

The Frick Building is one of the major distinctive and recognizable features of Downtown Pittsburgh, Pennsylvania, United States. The tower was built by and is named for Henry Clay Frick, an industrialist coke producer who created a portfolio of commercial buildings in Pittsburgh. The building is listed on the National Register of Historic Places. The tower was built directly adjacent to a building owned by his business partner and rival Andrew Carnegie, on the site of Saint Peter Episcopal Church. Frick, who feuded with Carnegie after they split as business associates, had the building designed to be taller than Carnegie's in order to encompass it in constant shadow.The Frick Building was opened on March 15, 1902 and originally had twenty floors. It was the tallest building in the city at that time. A leveling of the surrounding landscape that was completed in 1912 caused the basement to become the entrance, so some sources credit the building with twenty-one stories. It rises 330 feet (101 m) above Downtown Pittsburgh. Its address is 437 Grant Street, and is also accessible from Forbes and Fifth Avenues. The building's architect was Daniel H. Burnham of D.H. Burnham & Company, Chicago. Of the eleven executed designs for Pittsburgh by D.H. Burnham & Company, the Frick Building is one of only seven survivors.The top floor, which was reserved for The Union Club of Pittsburgh, includes a balcony around the perimeter of the building, a high, handcrafted ceiling, and heavy, elaborate brass door fixtures. Originally, H.C. Frick used it as his personal office and as a meeting place and social club for wealthy industrialists. On the 19th floor was Frick's personal shower. At the time, no other shower had been built that high above ground level, because water could not easily be pumped that high with the technology of the time. The shower, non-functioning, still exists on the 19th floor today. Fittingly for a building created for a man who vowed to be a millionaire by age thirty, the lobby features an elegant stained-glass window by John LaFarge, depicting "Fortune and Her Wheel" (1902). The two bronze sentinel lions (1904) in the lobby were created by sculptor Alexander Proctor. A bust of Frick by sculptor Malvina Hoffman (1923) is displayed in the rear lobby, which extends from Forbes to Fifth Avenue.For a time, the building was home to the headquarters for Frick's family whiskey business, Old Overholt. The headquarters oversaw a network of sales offices around the United States.