Roman Catholic Diocese of Pittsburgh

Saint Paul Cathedral is the mother church of the Diocese of Pittsburgh in Pittsburgh, Pennsylvania. St. Paul's parish was established in 1833.

The Software Engineering Institute (SEI) is an American research and development center headquartered in Pittsburgh, Pennsylvania. Its activities cover cybersecurity, software assurance, software engineering and acquisition, and component capabilities critical to the United States Department of Defense.

Pittsburgh Chinese Church is an independent, interdenominational and evangelical church with locations in McCandless, Pennsylvania and the Oakland neighborhood of Pittsburgh, Pennsylvania. Its main congregation is in McCandless Township. Its Oakland location, acronymed "PCCO", consists of the Mandarin speaking "Chinese congregation" and "OIF" (Oakland International Fellowship). ACF (Asian Christian Fellowship) is a ministry of the McCandless location. It includes students from many area universities including Carnegie Mellon University, the University of Pittsburgh, the University of Pittsburgh Medical Center, and Duquesne University. It works loosely with InterVarsity Christian Fellowship. Both locations have: annual Vacation Bible School weekly bilingual (English, Mandarin) prayer meeting weekly contemporary worship and monolingual and bilingual church service childcare during Sunday school lunch service weekly cell group meetings

Fairfax Apartments is a historic apartment building in the North Oakland neighborhood of Pittsburgh, Pennsylvania. It was built in 1926–27 as the Fifth Avenue Apartments, but was renamed in 1928 after being sold to the Fairfax Hotel Company. The building was listed on the National Register of Historic Places in 2021.The building is nine stories high and consists of a main block facing Fifth Avenue with two perpendicular rear wings. It is faced with brown brick with limestone Jacobethan Revival architectural details including spandrels, quoins, and stringcourses. The symmetrical front elevation is 15 bays wide with three slightly projecting sections which are topped with stone finials. The side and rear elevations are less ornamented. The building contains 27 1-bedroom and studio apartments on each floor except for the ground floor, which was mostly converted to office space.

The Duquesne Gardens was the main sports arena located in Pittsburgh, Pennsylvania, during the first half of the 20th century. Built in 1890, the building originally served as a trolley barn, before becoming a multi-purpose arena. The Gardens opened three years after a fire destroyed the city's prior sports arena, the Schenley Park Casino, in 1896. Over the years, the Gardens was the home arena of several of Pittsburgh's historic sports teams, such as ice hockey's Pittsburgh Pirates and Pittsburgh Hornets. The Western Pennsylvania Hockey League, which was the first ice hockey league to openly hire and trade players, played all of its games at the Gardens. The arena was also the first hockey rink to ever use glass above the dasher boards. Developed locally by the Pittsburgh Plate Glass Company, Herculite glass was first tested in Pittsburgh. Most rinks were using wire mesh before the shatterproof glass was invented. Finally, the Pittsburgh Ironmen, a charter member of the Basketball Association of America (a forerunner of the National Basketball Association), played at the Gardens from 1946 to 1947. Outside team sports, the Duquesne Garden Ball Room, located on the arena's second floor, was also one of the largest dance halls in the country during the time.

The Mellon College of Science (MCS) is part of Carnegie Mellon University in Pittsburgh, Pennsylvania, US. The college is named for the Mellon family, founders of the Mellon Institute of Industrial Research, a predecessor of Carnegie Mellon University. The college offers various bachelor's, master's, and doctoral degrees. It also awards the Dickson Prize in Science. Since 2016, its dean is Rebecca Doerge.

Oakland Catholic High School is a private, Roman Catholic college preparatory school for girls, located in the Oakland neighborhood of Pittsburgh, Pennsylvania, United States, within the Diocese of Pittsburgh. It was established by Bishop Donald Wuerl in 1989 as the merger of former all-girl parish high schools of Sacred Heart and St. Paul Cathedral to serve as a sister school for Central Catholic. Approximately 600 students matriculate at Oakland Catholic and the school draws female students from all over the City of Pittsburgh and the suburbs. Upon graduation, 100% of its students continue to a four-year university. Oakland Catholic High School completed construction and renovations for the 2008-2009 school year.

The Mellon Institute of Industrial Research is a former research institute in Pittsburgh, Pennsylvania, United States, which is now part of Carnegie Mellon University. It was founded in 1913 by Andrew Mellon and Richard B. Mellon as part of the University of Pittsburgh, and was originally located in Allen Hall. After becoming an independent research center and moving to a new building on Fifth Avenue, the Mellon Institute subsequently merged with the Carnegie Institute of Technology in 1967 to form Carnegie Mellon University. While it ceased to exist as a distinct institution, the landmark building bearing its name remains located at the corner of Fifth Avenue and Bellefield Avenue in Oakland, the city's university district. It is sited adjacent to The Carnegie Mellon Software Engineering Institute (SEI) and the University of Pittsburgh's Bellefield Hall and is across Bellefield Avenue from two other local landmarks: the University of Pittsburgh's Heinz Memorial Chapel and the Cathedral of Learning. Designed by architect Benno Janssen (1874–1964), the Mellon Institute building is noted for its neo-classical architecture and elegant construction, with its signature monolithic limestone columns (the largest monolithic columns in the world). Andrew Mellon, who served as United States Secretary of the Treasury, specified to Janssen a building with a monumental ionic colonnade similar to the Treasury Building in Washington, D.C. The proportions of the Mellon Institute's street facades are nearly those of the long lateral facade of the Parthenon on the Acropolis in Athens, Greece. The Mellon Institute building was completed and dedicated posthumously to the Mellon brothers in May 1937. The Mellon Institute building currently houses the Office of the Dean for Carnegie Mellon University's Mellon College of Science, as well as the administrative offices and research laboratories for the Department of Biological Sciences and Department of Chemistry. From 1986 until 2006, it also housed the Pittsburgh Supercomputing Center.

The Information Networking Institute (INI) was established by Carnegie Mellon in 1989 as the nation's first research and education center devoted to information networking.As an integral department of the College of Engineering and a collaboration of the School of Computer Science, the Tepper School of Business, and the Heinz College, the INI's professional graduate degree programs represent a fusion of technologies, economics and policies of secure communication networks, systems and services. The INI also partners with research and outreach entities to extend educational and training programs to the broad audience of people using information networking as part of their daily lives. The INI is the educational partner of Carnegie Mellon CyLab, a university-wide, multidisciplinary research center involving more than 50 faculty and 100 graduate students.

Also known as JPRC and Just Research, Justsystem Pittsburgh Research Center was a late-1990s computer science research laboratory in Pittsburgh, loosely associated with Carnegie Mellon University. Its director was Dr. Scott Fahlman.During its relatively brief existence, from May 1996 to July 2000, JPRC performed work in machine vision, text classification and summarization, programming environments and user interface design. Just Research researchers included: Dr Vibhu Mittal Dr Andrew McCallum Mr Mark Kantrowitz Dr Mikako Harada Mr Paul Gleichauf Dr Rahul Sukthankar Dr Michael Witbrock Mr Antoine Brusseau Dr Shumeet Baluja Mrs Keiko Hasegawa Dr Dayne Freitag Dr Rich Caruana Dr David "Pablo" Cohn

Bellefield Hall is a Pittsburgh History and Landmarks Foundation Historic Landmark and is a contributing property to the Schenley Farms Historic District on the campus of the University of Pittsburgh across Bellefield Avenue from Heinz Memorial Chapel and the lawn of the university's Cathedral of Learning in Pittsburgh, Pennsylvania, USA. A 1924 italianate structure by architect Benno Janssen, it originally served as a Young Men's and Women's Hebrew Association, but now houses rehearsal spaces, classrooms, offices, and a Digital Recording Studio for the University of Pittsburgh's Department of Music, as well as a university gymnasium, fitness center, indoor swimming pool, and a 676-seat auditorium.

Schenley Tunnel (also known as the Neville Street Tunnel and Pittsburgh Junction Railroad Tunnel) is a railroad tunnel in Pittsburgh, Pennsylvania, United States. The tunnel runs beneath Neville Street in the city's North Oakland neighborhood; the south portal is at the upper end of Junction Hollow, the north in a ravine that opens into Skunk Hollow, between North Oakland and Bloomfield. Schenley Tunnel measures 2,872 feet (875 m) in length and runs about 70 feet (21 m) beneath Neville Street. It carries CSX Transportation's P&W Subdivision. The Allegheny Valley Railroad, a short-line railroad, uses the tunnel for regional services. Amtrak's Capitol Limited also uses the tunnel when entering and leaving the city.