New London Union Station is a historic regional rail station located in New London, Connecticut. It is served by both Amtrak and the Connecticut Department of Transportation's Shore Line East. Located on the Northeast Corridor, the busiest railway in the United States, New London station sees more rail service than either of the stations that border it: Old Saybrook and Mystic. Both of Amtrak's train routes that operate on the portion of the Northeast Corridor north of New Haven — the Northeast Regional and Acela Express — stop at New London station. Along with this service, Shore Line East operates limited service to New London, making it the eastern terminus of the commuter rail service in Connecticut. Greyhound bus service is also available at the station.