First Avenue station (Pittsburgh Regional Transit)

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.

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 Grant Building is 40-story, 147.8 m (485 ft) skyscraper at 310 Grant Street in downtown Pittsburgh, Pennsylvania. The building was completed and opened on February 1, 1929 at a cost of $5.5 million ($86.8 million today). The Art Deco building's facade is built with Belgian granite, limestone, and brick. It was famous for a radio antenna that rose roughly 100–150 feet (30–46 m) from the roof of the tower and had an aviation beacon that spelled out .--. .. - - ... -... ..- .-. --. .... or P-I-T-T-S-B-U-R-G-H in Morse Code. The beacon could be seen as far away as 150 miles (240 km) on clear nights. A smaller version of the beacon, still flashing out the name of the city remains to this day, although malfunctions with the relay switch caused it to spell "P-I-T-E-T-S-B-K-R-R-H", and eventually "T-P-E-B-T-S-A-U-R-G-H" before being repaired on July 27, 2009.The tower on the roof also served as the broadcast antenna for radio station KDKA Pittsburgh which made the first commercially licensed radio broadcast on election night of 1920. At 7:00 AM on its 14th birthday (February 2, 1934), the radio station inaugurated new studios on the Grant Building's third floor. Huntington National Bank, which operates a branch inside the tower, owns the signage rights, giving them two signs in the Pittsburgh skyline alongside Centre City Tower where Huntington has their Western Pennsylvania headquarters.

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 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.

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".

The U.S. city of Pittsburgh, Pennsylvania was home to a "small, but busy" Chinatown, located at the intersection of Grant Street and Boulevard of the Allies in Downtown Pittsburgh where only two Chinese restaurants remain. The On Leong Society was located there. According to the article, "... the first Chinese community in Pittsburgh developed around Wylie Avenue above Court Place," according to a 1942 newsletter of the American Service Institute of Allegheny County. The Chinatown spread to Grant Street, and then "... to Water Street and then spread out to Second and Third avenues."

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.

The old Allegheny County Jail in downtown Pittsburgh, Pennsylvania is part of a complex (along with the Allegheny County Courthouse) 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 jail was built by the Norcross Brothers between 1884 and 1886 (the year of Richardson's death), and the courthouse was finished in 1888 under the supervision of Shepley, Rutan and Coolidge. The two structures are linked across Ross Street by a "Bridge of Sighs" (so called for its similarity to the famous bridge in Venice, Italy). Additions were made 1903–1905 by Frederick J. Osterling. In 1892, anarchist Alexander Berkman was held here awaiting trial for the attempted murder of industrialist H. C. Frick. In 1902, condemned brothers Jack and Ed Biddle escaped from the jail with the aid of the warden's wife. (The 1984 film Mrs. Soffel, based on the incident, includes shots of the jail exterior.) The jail and courthouse were added to the List of City of Pittsburgh historic designations on December 26, 1972. They were added to the List of National Historic Landmarks on May 11, 1976. A new jail opened in spring 1995, and the original jail now houses the Allegheny County Court of Common Pleas Family Division.

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.

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 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.