Suggestions for a male travel group

Hello everyone,

My friends are coming to Berlin for a few days and i need some suggestions on how to entertain them. Clubs or raves are not really an option because none of us are really into techno. And even when they want a club i would tell them to go to matrix :D.

I am looking for some general fun activities. But it should be something you can only find in Berlin or in Big cities so not something commen like bowling.

Thanks in advance for the help!