This could be a wasted guess, but:
Is it Stauf's Mansion (from 7th Guest and 11th hour)

Tension is killing me....

YES! You got it!

Congratulations.

If you'd like to feel free to start a new thread for 20 Questions for Fun! #4

If not, I'll start it later today or tomorrow, just let me know.

Please keep the same rules, and make sure that game details are either on the Wikipedia page of the game, or maybe on the GOG card where applicable so that it's not impossibly difficult to play.

One final rule: always keep this as a just for fun / non-giveaway thread.

We got it! Thanks for helping me out, I wasn't sure but thanks to you I went for it. So if you have a topic for the next round, I'll leave it up to you to PM djdarko with the new riddle, if you have something in mind that is?

EDIT: I do have an idea for a riddle though, just in case

Nice one :) that was a lot of fun!

+1 's all round!!

Thanks djdarko for another fun round!

I already have a fun idea for the next round but if CptFandango has one too I'll let him host the next round.

Nah you go for it buddy, you did all the work with those questions from 50 minutes ago onwards!

OK, next round going up in the next 2-3 minutes!

EDIT: New round here:
http://www.gog.com/forum/general/20_questions_for_fun_4

Have fun, and thanks again to everyone involved :)