Harry Kendall Thaw (February 12, 1871 February 22, 1947) was the son of coal and railroad baron William Thaw Sr. of Pittsburgh, Pennsylvania, United States. Heir to a multimillion-dollar fortune, the younger Thaw is most notable for shooting and killing the renowned architect Stanford White on June 25, 1906, on the rooftop of New York City's Madison Square Garden in front of hundreds of witnesses.

Thaw had harbored an obsessive hatred of White, believing he had blocked Thaw's access to the social elite of New York. White had also had a previous relationship with Thaw's wife, the model/chorus girl Evelyn Nesbit, when she was 1617 years old, which had allegedly begun with White plying Nesbit with alcohol (and possibly drugs) and raping her while she was unconscious. In Thaw's mind, the relationship had "ruined" her. Thaw's trial for murder was heavily publicized in the press, to the extent that it was called the "trial of the century". After one hung jury, he was found not guilty by reason of insanity.

Plagued by mental illness throughout his life that was evident even in his childhood, Thaw spent money lavishly to fund his obsessive partying, drug addiction, abusive behavior toward those around him, and gratification of his sexual appetites. The Thaw family's wealth allowed them to buy the silence of anyone who threatened to make public the worst of Thaw's reckless behavior and licentious transgressions. However, he had several additional serious confrontations with the criminal justice system, one of which resulted in seven years' confinement in a mental institution.

Pittsburgh ( PITS-burg) is a city in the Commonwealth of Pennsylvania in the United States and the county seat of Allegheny County. A population of 302,971 residents lives within the city limits as of the 2020 US Census, making it the 68th-largest city in the U.S. and the second-most populous city in Pennsylvania, behind Philadelphia. The Pittsburgh metropolitan area is the anchor of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 27th-largest in the U.S.

Pittsburgh is located in the southwest of the state, at the confluence of the Allegheny River and the Monongahela River, forming the Ohio River. Pittsburgh is known both as "the Steel City" for its more than 300 steel-related businesses and as the "City of Bridges" for its 446 bridges. The city features 30 skyscrapers, two inclined railways, a pre-revolutionary fortification and the Point State Park at the confluence of the rivers. The city developed as a vital link of the Atlantic coast and Midwest, as the mineral-rich Allegheny Mountains led to the region being contested by the French and British empires, Virginians, Whiskey Rebels, and Civil War raiders.Aside from steel, Pittsburgh has led in the manufacturing of other important materials — aluminum and glass — and in the petroleum industry. Additionally, it is a leader in computing, electronics, and the automotive industry. For part of the 20th century, Pittsburgh was behind only New York City and Chicago in corporate headquarters employment; it had the most U.S. stockholders per capita. Deindustrialization in the 1970s and 1980s laid off area blue-collar workers as steel and other heavy industries declined, and thousands of downtown white-collar workers also lost jobs when several Pittsburgh-based companies moved out. The population dropped from a peak of 675,000 in 1950 to 370,000 in 1990. However, this rich industrial history left the area with renowned museums, medical centers, parks, research centers, and a diverse cultural district.After 1990, Pittsburgh transformed into a hub for the health care, education, and technology industries. Pittsburgh is a leader in the health care sector as the home to large medical providers such as University of Pittsburgh Medical Center (UPMC). The area is home to 68 colleges and universities, including research and development leaders Carnegie Mellon University and the University of Pittsburgh. Google, Apple Inc., Bosch, Facebook, Uber, Nokia, Autodesk, Amazon, Microsoft and IBM are among 1,600 technology firms generating $20.7 billion in annual Pittsburgh payrolls.

Federal money has supported the research agenda. The area has served as the federal agency headquarters for cyber defense, software engineering, robotics, energy research and the nuclear navy. The nation's fifth-largest bank, eight Fortune 500 companies, and six of the top 300 U.S. law firms make their global headquarters in the area, while RAND Corporation (RAND), BNY Mellon, Nova, FedEx, Bayer, and the National Institute for Occupational Safety and Health (NIOSH) have regional bases that helped Pittsburgh become the sixth-best area for U.S. job growth.In 2015, Pittsburgh was listed among the "eleven most livable cities in the world". The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States in 2005, 2009, 2011, 2012, 2014 and 2018. The region is a hub for Leadership in Energy and Environmental Design and energy extraction.