I've only been to Germany (and technically Ireland but I was just changing planes there) and didn't really find anything to be too weird or different than what I know of living in California. The biggest thing was just how all the normal shops and restaurants closed fairly early (like 6pm) and there was a red light district that opened up around that time. They even had the thing where some of the establishments had naked dancing women in the windows so you can see them from the street. I never actually went in, but I walked the whole block nearly every night when I was there at 19 years old.