Hello tkh267
You may benefit from the combined offer (train ride and ticket for the museum). You will find all information as well as the possibility to book your ticket under this link. Due to a technical problem, the English-language offers pages for Leisure & Holidays will be online again this afternoon. Until then, you will find the offers in German, French and Italian. We apologise for any inconvenience.
I wish you an excellent day.
Regards, RahelW