Information is available about sleeper trains, which offer a sense of adventure and a journey into the unknown. A travel piece mentions exploring Vienna, visiting museums and galleries, and trying local treats like Sacher torte. The city's main station, Hauptbahnhof, is a major transport hub with connections to various cities.

Further details about sleeper trains and travel options can be found through the source, KVIA ABC-7, which references an article by Ben Jones from CNN.