Allegheny County Airport

The Pittsburgh Institute of Aeronautics (PIA) is a private trade school focused on aviation-related programs with its main location in West Mifflin, Pennsylvania. The institution's headquarters is at the Allegheny County Airport and it has three branch campuses. PIA's aviation programs are accredited by the Accrediting Commission of Career Schools and Colleges.

Wilson Christian Academy was a private Christian school in West Mifflin, Pennsylvania, that was established in 1977. It offered preschool for four- and five-year-olds, a full day kindergarten program and classes for grades 1 through 12. In July 2016, it was announced that Wilson would be merged into Cornerstone Christian Preparatory Academy, a school which had been founded in 2008 by Brandon McCall and was then located in South Park. The school remained at Wilson Christian Academy's location in West Mifflin but took Cornerstone's name and adopted their policies and education model. The school remains Pre-K through 12th grade.

Century III Mall is an abandoned enclosed shopping mall located along Route 51 in West Mifflin, Pennsylvania, approximately 10 miles southeast of downtown Pittsburgh, Pennsylvania, United States. The mall was built on a former slag dump in 1979. The Century III Mall planning began in 1976, opened in 1979, and closed in 2019. Anchor stores included Kaufmann's, Gimbels, JCPenney, Sears, and Montgomery Ward. It was the third largest shopping mall in the world at the time of its opening, but has since been surpassed by much larger malls. The mall was originally developed and owned by Edward J. DeBartolo Corporation. A 1996 merger between the mall's developer, now known as the DeBartolo Realty Corporation, and Simon Property Group, brought Century III Mall under the Simon DeBartolo Group heading, who owned the mall until 2011. The vacant mall site is currently owned by Las Vegas-based Moonbeam Capital Investments LLC.

The Mifflin Elementary School in the Lincoln Place neighborhood of Pittsburgh, Pennsylvania is a building from 1932. It was listed on the National Register of Historic Places in 1986.

Bettis Atomic Power Laboratory is a U.S. Government-owned research and development facility in the Pittsburgh suburb of West Mifflin, Pennsylvania, that works exclusively on the design and development of nuclear power for the U.S. Navy. It was one of the leaders in creating the nuclear navy. The laboratory is part of the Naval Nuclear Propulsion Program, a joint U.S Navy-Department of Energy program responsible for the research, design, construction, operation and maintenance of U.S. nuclear-powered warships. The laboratory was founded in 1949 on the site of the former Bettis Field, named after Cyrus Bettis. It covers approximately 207 acres (0.84 km2). From the Lab's founding until 1998, it was run by Westinghouse Electric Corporation. Bechtel Corporation won the contract to run the laboratory on September 19, 2008 and assumed operation on February 1, 2009, first under its subsidiary Bechtel Bettis, Inc., later under Bechtel Marine Propulsion Corporation. The contract changed hands again when Fluor Corporation, as their subsidiary Fluor Marine Propulsion, LLC won the contract to run the laboratory on July 12, 2018 and assumed operations on October 1, 2018.The laboratory developed Oak Ridge National Laboratory's original design of the pressurized water reactor (PWR) for operational naval use. It built the nuclear propulsion plants for the first U.S. nuclear submarines and surface ships including USS Nautilus, USS George Washington, USS Long Beach, and USS Enterprise.Westinghouse's Nuclear Power Division adapted the PWR design for commercial use and built the first commercial nuclear power plant in the United States, the Shippingport Power Plant in the west hills of Pittsburgh.The laboratory had two supercomputers listed on the 26th TOP500 List (November 2005). Ranked 97 a 1,090 processor Opteron system and ranked 405 a 536 processor Itanium 2 system.The laboratory is also home to the U.S. Navy's Bettis Reactor Engineering School. The school provides a post-graduate certificate program in nuclear engineering with a focus on nuclear reactor design, construction, and operations. It is open only to naval personnel and Bettis engineers. The laboratory had been chosen to develop the Project Prometheus nuclear power source for the JIMO (Jupiter Icy Moons Orbiter) project, however, funding for this program was cancelled in the fall of 2005.

St. John the Baptist Byzantine Catholic Cathedral is the mother church of Byzantine Catholic Metropolitan Church of Pittsburgh, the American branch of the Ruthenian Catholic Church. It is located at 210 Greentree Road in Munhall, Pennsylvania, a suburb of Pittsburgh in the Monongahela River valley.

The Mon Valley Works–Irvin Plant is a steel processing plant operated by U.S. Steel and historically a "hot strip mill" (sometimes referred to as a "steel mill") in the Pittsburgh suburb of West Mifflin, Pennsylvania. The site consists of 650 acres on a hilltop 250 feet above the Monongahela Valley. The plant has an annual capacity of 2.9 million net tons of steel from an 80″ hot strip mill, 64″ and 84″ Pickle lines, 84″ five-stand cold reduction mill, continuous annealing line, batch and open-coil annealing facilities, 84″ temper mill, 52″ hot-dip galvanizing line and a 48″ hot-dip galvanizing line, as well as the #11 Shear Line and #17 Recoil line.

Bettis Field was an airstrip in West Mifflin, Pennsylvania, southeast of Pittsburgh, Pennsylvania, established in 1924. It was named for U.S. Army Air Corps Lieutenant Cyrus Bettis following his fatal accident on Jack's Mountain near Bellefonte, Pennsylvania in 1926.

West Mifflin is a borough in Allegheny County, Pennsylvania, United States, located southeast of downtown Pittsburgh. The population was 19,589 at the 2020 census. It is named after Thomas Mifflin, 1st Governor of Pennsylvania, signer of the United States Constitution, and 1st Quartermaster General of the United States Army.Although the borough is heavily residential, it is home to one of America's oldest traditional amusement parks, Kennywood Park. Other employers include advanced naval nuclear propulsion technology research and development facility, Bettis Atomic Power Laboratory; monorail manufacturer Bombardier; US Steel's Mon Valley Works–Irvin Plant; Community College of Allegheny County's South Campus; and the Allegheny County Airport.

Bear's Retreat is a small Pennsylvania landmark, primarily known for its age. It is a privately owned house dating back to c. 1794, being lived in as of 2011. The southern log side was built by Jacob Bare in 1794. It is believed he was a German immigrant based on the three-story construction of the log section. Despite plenty of room to build his home, large, heavy, hand-hewn logs were raised higher and higher into place in the traditional building custom of his homeland. The Northern "new addition" brick side built in 1840. The red-brick exterior was made on-site using the abundant clay found on the property. Remains of the outdoor summer kitchen are still clearly present. The property was designated a Pittsburgh History and Landmarks Foundation Historic Landmark in 1983. Bear's Retreat is at 253 Inglefield Drive, Pleasant Hills, Pennsylvania.

Hays Army Ammunition Plant was an 7.9-acre (3.2 ha), 1,650-employee foundry established in 1942 in the Hays neighborhood of Pittsburgh, Pennsylvania. At first it produced 16-inch (410 mm) shells and 5-inch (130 mm) breechblocks for the Navy. Though owned by the Army, the plant was operated by the Mesta Machine Company on behalf of the United States Navy during World War II. The plant was operated by the Mullins Manufacturing Company during the Korean War and by the Levinson Steel Company during the Vietnam War. For the Army it produced 105 mm shells, 250,000 of these per month throughout 1968. It was the only Army plant with cold extrusion capability. Manufacturing ceased in May 1970 and the plant was mothballed in June 1971. The 1982 value of the complex was $69 million. The plant was placed on standby in 1991 and donated for redevelopment in 1993. It is now used as an industrial site.

Pleasant Hills is a borough in Allegheny County, Pennsylvania, United States. As of the 2020 census, the population was 8,504. It is a suburb of the Pittsburgh metropolitan area.