Taking the train with Interrail instead of flying within Europe
ÖBB Nightjet night train | Eurail.com
File:Map night trains in europe.png - Wikimedia Commons
Nightjet: Central Europe's Biggest Night Train Network - Rail Guide Europe
Austria Vienna train rail maps
Night and sleeper train maps
Overnight train Nightjet Brussels-Vienna | SNCB International
ÖBB Nightjet | ÖBB Night Train Tickets & Info | Trainline
Elias Van Deun on Twitter: "How could the NightJet network look like in 2024? Map from a presentation by @unsereOEBB representatives during a recent conference in Copenhagen. Brussels-Berlin is on the radar! @_