Yup Berghain, Tresor and I can't remember the other one but it looked HUGE and SCARY from the outside.
Tacheles was incredible and I'm happy I got to experience it before it closed down.
Jeeez. Berghain I can understand as they have a very difficult door. But Tresor is usually the insurance policy as they normally let anyone in (within reason); you must have just had some bad luck that night. Tresor suffers because of the open door policy and you did not miss anything IMO. I'm guessing the HUGE and SCARY one was Kater Holzig which is on the Spree and looks largely derelict. Never give up on Berghain though as it is incredible once you're in. Your jaw just drops when you get in.