I heard about how it’s best to concentrate a lot on countries you have already done and there is quite a lot of German routes but not in the capital so I was thinking that above ground train where u can see a lot of the city would be a good idea
https://forums.dovetailgames.com/threads/s-bahn-berlin-stadtbahn-s5-s75-s7.26052/ https://forums.dovetailgames.com/threads/u1-u-bahn-berlin.26050/ https://forums.dovetailgames.com/threads/u2-u-bahn-berlin-kleinprofiel.26044/
