Pittsburgh

===Freight rail===
[[File:Pittsburgh Penn Station (6962200876).jpg|thumb|[[Union Station (Pittsburgh)|Union Station]], built in 1903]]
Pittsburgh's rail industry dates to 1851 when the [[Pennsylvania Railroad]] first opened service between the Pittsburgh and [[Philadelphia]]. The [[Baltimore and Ohio Railroad]] entered the city in 1871. In 1865, [[Andrew Carnegie]] opened the [[Pittsburgh Locomotive and Car Works]], which manufactured for the industry until 1919. Carnegie also founded the [[Union Railroad (Pittsburgh)|Union Railroad]] in 1894 for heavy freight services and it still serves the area's steel industry, while [[George Westinghouse]]'s [[Wabtec]] has been a leader in rail engines and switching since 1869.

Pittsburgh is home to one of [[Norfolk Southern Railway]]'s busiest freight corridors, the [[Pittsburgh Line]], and operates up to 70 trains per day through the city. The suburban [[Conway Yard|Conway Rail Yard]], built in 1889, was the largest freight rail center in the world from 1956 until 1980 and is today the nation's second-largest. [[CSX]], the other major freight railroad in the eastern U.S., also has [[Pittsburgh Subdivision|major operations]] around Pittsburgh.