Pennsylvania Station (normally abbreviated Penn Station) is a name applied by the Pennsylvania Railroad (PRR) to several of its grand passenger terminals. In the early 20th century different railroad companies typically used different stations, especially in major cities or towns, so the station usually took the name of the company. (If various railroads combined to use the same depot, the place often took the name Union station.)
New York City's Penn Station opened September 8, 1910 for Long Island Rail Road trains via the new tunnel under the East River. Pennsylvania Railroad trains began using it November 27, supplementing and eventually replacing the old New York City-area terminal across the Hudson River at Exchange Place in Jersey City. The name was adopted by the PRR on March 1, 1909. The opening of the Hell Gate Bridge on April 1, 1917 brought New York, New Haven and Hartford Railroad intercity trains into Penn Station. The station now lies along Amtrak's Northeast Corridor and Empire Corridor, and also serves New Jersey Transit and Long Island Rail Road commuter trains.
Newark, New Jersey's Penn Station opened in 1935, replacing a smaller structure. It now serves NJ Transit trains, buses and Newark Light Rail, Amtrak Northeast Corridor and other intercity trains, PATH trains to Jersey City/Lower Manhattan and Greyhound buses.