Pittsburgh is a city in Pennsylvania and the state's second-most populous city. It is located in Alleghany County in southwest Pennsylvania and has earned the nickname "the Steel City" because of its more than 300 steel businesses and "The City of Bridges" for its 446 bridges. The city is primarily known because of its strong steel industry but was also home to many aluminum, glass, and petroleum businesses.
The city has become a hub for healthcare, education, and technology. Pittsburgh has become a leader in health care because it is the home of large providers such as the University of Pittsburgh Medical Center. The city is also home to 68 colleges and universities like Carnegie Mellon University and the University of Pittsburgh. Pittsburgh also boasts several major league sports teams, including the Pittsburgh Penguins (NHL), the Steelers (NFL), and the Pirates (MLB).
The culmination of the employment opportunities, the educational institutions, and the sports industry in Pittsburgh has led to a vibrant city. The city is home to many people who depend on their roofs for protection.