Bucharests Railways Museum is a specialist stop, but a rewarding one if you like stations, locomotives, maps, and the machinery that tied Romania together. Its collections focus on the development of Romanian rail, with models, documents, signals, and railway equipment rather than polished spectacle.
The museum makes most sense before or after a train journey from Gara de Nord, which is close by. It is modest and old-fashioned, so come for context and texture rather than interactive displays.