The Pennsylvanian is a daily Amtrak train that began service in 1980 and runs between Pittsburg and Philadelphia along the former route of the Pennsylvania Railroad's Broadway Limited. Other predecessor trains along the same route (with varying end terminals) include the PRR's Duquesne, the Keystone, the National Limited, the Fort Pitt, and the Three Rivers.
Pittsburgh Pennsylvania Station
Pennsylvania Railroad Station
30th Street Station
Madison Square Garden is three lies in one. It's round, it's 10 blocks north of Madison Square, and you don't want to eat anything that grows there.