Tresor is still mainly a techno club, especially the cellar which used to be
the vaults of a bank. You can still see the old safety deposit boxes in the walls, they're now without doors and used as slots to light little candles in. The smell of mould is horrible though
The upstairs area is called Globus and the dj's there will play prog house, house, or techno. The back garden is nice to chill out in as well.
What's really remarkable about Tresor nowadays is the staying power of the building which is very scruffy and situated just a few hundred meters fron the headquarters of Deutsche Bank and Sony. Those buildings cost billions to build, but there stands little Tresor, slap in the middle of Potsdamer Platz which is one of the most expensive spots of land in the world. A new Tresor was supposed to open by this year's Love Parade "at the latest", but the old one was still in business when my bf went to Berlin 2 wks ago