Bell Telephone Building (Pittsburgh)

The Centre City Tower (also spelled Center City Tower) is a 341-foot (104 m) tall skyscraper in Pittsburgh, Pennsylvania. It contains 26 floors, and stands as the 20th-tallest building in the city. Centre City Tower was constructed in 1971, and was later renovated in 2002. The entire building contains Class B office space, and is an example of modern architecture. Signage for Huntington Bank, the building's major tenant, adorns the outside of the structure.

The Allegheny HYP Club (Harvard-Yale-Princeton Club) is a private social club in downtown Pittsburgh, Pennsylvania. Located at 617-619 William Penn Place, it was built in 1894 and was added to the List of Pittsburgh History and Landmarks Foundation Historic Landmarks in 2002. On July 1, 1997, the club absorbed the Pittsburgh Club membership and assets.The Pittsburgh Harvard-Yale-Princeton Club was formally founded on November 7, 1930. The club merged with the Three Rivers Stadium based Allegheny Club in 2002 after Allegheny had filed for bankruptcy protection.

Koppers Building is a historical building in Pittsburgh, Pennsylvania, commissioned by Andrew W. Mellon and completed in 1929. The building is named after the Koppers Chemical Corporation and is one of the major features of Downtown Pittsburgh.

The James Reed Building or the Reed Smith Building is a historic building in Pittsburgh. It was constructed in 1902. It is in the Beaux-Arts architecture style. For many years, the primary tenant had been Reed Smith law firm. The buildings namesake is one of Reed Smiths founders, James Hay Reed. Reed Smith bought the nine-story building in 1984 for $5.82 million as 435 Sixth Ave Associates. In 2007 Reed Smith decided to relocate its corporate headquarters to Three PNC Plaza and sell the building, which had a market value of $16.78 million. The downtown Pittsburgh office vacancy rate at the time was 20%, driving down the value of the building. In October 2008, the building was purchased by Mika Realty Group of Los Angeles for $6.5 million. Mika Realty, owned by Michael Kamen and Gerson Fox, purchased the building under the name 600 William Penn Partners LLC. Kamen and Fox also purchased the nearby Union Trust Building 6 months prior.In 2009, Reed Smith law firm moved its corporate headquarters to Three PNC Plaza. Mika Realty was never able to find a tenant to replace Reed Smith, the building remained vacant, which led to bankruptcy in 2011. PMC Property Group purchased the building in September 2012 for $5.5 million in a U.S. Bankruptcy Court auction in Los Angeles.The building was redeveloped into a 249-room Hotel Monaco, opened in January 2015.

The Alcoa Building (a.k.a. the Regional Enterprise Tower) is a 410-foot-tall (120 m) skyscraper in Downtown Pittsburgh, Pennsylvania. It was completed in 1953 and has 31 floors. It is the 15th tallest building in the city and is adjacent to Mellon Square. A unique radiant heating and cooling system is contained in the ceiling: since there are no pipes, radiators, or air conditioning units along the exterior walls, an additional 15,000 square feet (1,400 m2) of rentable space was gained. Also, the windows rotate 360 degrees so they can be washed from the inside.Originally the headquarters for the Aluminum Company of America (ALCOA), the unique aluminum walls of the building are 1/8 inch thick, which gives the building a very light weight and economical design. It was the first skyscraper with an all-aluminum facade. Upon ALCOA's 2001 relocation to a new headquarters building on Pittsburgh's North Shore near PNC Park, the old ALCOA Building became a home to government entities, regional nonprofits and small start-up companies including the RIDC.

The Pittsburgh & Steubenville Extension Railroad Tunnel, also known as the Panhandle Tunnel, was originally built for the Pittsburgh and Steubenville Extension Railroad in Pittsburgh. It officially opened for rail traffic in 1865.

Steel Plaza is a station on the Pittsburgh Regional Transit's light rail network, located in Pittsburgh, Pennsylvania. It serves the city's Downtown district and is located at the intersection of Grant Street and Oliver Avenue. The station consists of an outbound (southbound) side platform and an inbound island platform, with one track for trains to Wood Street and the other for a disused branch line to Union Station. The station has rights to 4.25 acres underground Mellon Green and is accessible by means of a tunnel that connects BNY Mellon Center and the US Steel Tower. The busiest station in the system, it provides access to eastern and central portions of downtown, including the city's tallest buildings, the US Steel Tower and BNY Mellon Center. Major office buildings including the Gulf Tower, 525 William Penn Place, and the Koppers Building are also only a block away, along with the many early 20th-century skyscrapers that make up downtown's inner core. The city's Uptown (commonly known as The Bluff) neighborhood, which includes PPG Paints Arena and Duquesne University is also within a short walk.

The Gulf Tower is a 44-story, 177.4 m (582 ft) Art Deco skyscraper in downtown Pittsburgh, Pennsylvania. The tower is one of the major distinctive and recognizable features of the city and is named for the Gulf Oil Corporation, one of the leading multinational oil companies of its time, and one of the Seven Sisters of the Anglo-American oil industry prior to its merger with fellow oil giantChevron. Built as the headquarters for the Gulf Oil Company, the structure was designed by the firm of Trowbridge & Livingston and completed in 1932 at a cost of $10.05 million ($163 million today). As late as 1981 Gulf Oil employed 3,100 within the building. Now called Gulf Tower, it has 44 floors and rises 177.4 m (582 ft) above Downtown Pittsburgh. The crown of the skyscraper is modeled after the Mausoleum of Halicarnassus in the style of a step pyramid. The building was listed as a Pittsburgh History & Landmarks Foundation Historic Landmark in 1973.On June 13, 1974, a bomb was detonated on the 29th floor of the Gulf Tower. The Weather Underground Organization took credit for the attack, claiming it was in protest to Gulf Oil's involvement in the oil rich regions affected by the Angolan War of Independence. The building was condemned following a fire on May 19, 2021 and required repairs. The Gulf Tower reopened to tenants and visitors six months later.

The Pittsburgh Central Downtown Historic District is a historic district in the Central Business District of Pittsburgh, Pennsylvania, United States. Bounded by Wood Street, Forbes Avenue, Grant Street, and Liberty Avenue, it was listed on the National Register of Historic Places on December 17, 1985. Its boundaries were expanded on May 2, 2013.The original district includes 26 buildings, 20 of which are considered contributing including a few small former residences built in the mid-19th century. The Frick Building and U.S. Post Office and Courthouse are contributing properties and are also listed separately on the National Register of Historic Places. Other notable contributing properties are the Gulf Tower, the William Penn Hotel, the Oliver Building, Mellon Square, the August Wilson Center, the Federal Reserve Bank Branch, Gulf Tower, the Frank & Seder Building, the Koppers Building and Trinity Cathedral.

ToonSeum: Pittsburgh Museum of Cartoon Art is a museum devoted exclusively to the cartoon arts, located in Pittsburgh, Pennsylvania. ToonSeum is one of three museums dedicated to cartoon art in the United States. ToonSeum moved to its own gallery space on Liberty Avenue in Pittsburgh's downtown Cultural District on November 8, 2009, aided by the Pittsburgh Cultural Trust. It is currently led by John Kelly.In 2009, the ToonSeum established its NEMO Award, given to notable individuals "for excellence in the cartoon arts". Recipients to date include veteran comic-book artist Ron Frenz, editorial and comic-strip artist Dick Locher, and comics artist, editorial cartoonist and artists' rights advocate Jerry Robinson. In May 2013, ToonSeum hosted the two-day North American Conference of the National Cartoonists Society. In that same month, plans for expansion of the museum were announced.On February 16, 2018, the ToonSeum announced on their Facebook page that they would close the physical location on Liberty avenue February 24, 2018 to focus on direct community outreach.

The August Wilson African American Cultural Center is a U.S. nonprofit arts organization based in Pittsburgh, Pennsylvania that presents performing and visual arts programs that celebrate the contributions of African Americans not only in Western Pennsylvania, but nationally and internationally. The August Wilson African American Cultural Center building is on Liberty Avenue in Downtown Pittsburgh's Cultural District. It includes galleries, classrooms, a 500-seat theater, a gift shop, a cafe, and many multi-purpose spaces for visual and performing art. The museum opened in 2009.

The Omni William Penn Hotel is a 23 floor (3 underground) hotel located at 530 William Penn Place on Mellon Square in downtown Pittsburgh, Pennsylvania. A variety of luminaries have stayed at the hotel, including John F. Kennedy. The hotel staff innovated Lawrence Welk's now famous bubble machine, and it was the site of Bob Hope's marriage proposal in 1934. The hotel has won numerous awards including being named to the "Best of Weddings 2009" list by The Knot and receiving the Editor's Choice Award in the Business Hotels category on Suite101.com. Omni William Penn Hotel, Pittsburgh is a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation.The hotel also features an award-winning restaurant that dates from 1916, the Terrace Room, featuring among other amenities a wall long mural entitled "The taking of Fort Pitt". The Terrace Room was voted "Best Hotel Dining" establishment in both 2008 and 2009 by readers of the Pittsburgh City Paper.