Probably late but...
The Panorama Bar is part of Berghain.
www.berghain.deBerghain is the shit if you like minimal techno. Panorama tends to be more haus orientated. Panorama tends to have a more er, straight crowd, whereas Beghain is gay as fuck (think leather chaps with no asses, handlebar mustachioed hairy Mary's and rabid bullqueers hungry for cock. I've seen things on Berghain's dancefloor you wouldn't believe... Homophobes would despise it here).
Berghain is the downstairs part of the club - the P Bar is the upstairs part of the same club. Confusing. You pay once at the door (usually no more that 10) and get entry to both clubs. I prefer Berghain... The club is in an old powerstation and is hands down the best venue I have ever been to - very industrial architecture, 1st class PA and a blinding light rig.
Tresor as you knew it is dead. They have found a new venue and from what friends in The Reich tell me it's pretty damn good. The line-ups in Tresor have always been top notch.
Maria Am Ostbahnhof is also worth checking out. Google will tell you where.
You can thank Unc' for this link about Berghain:
http://www.pitchforkmedia.com/article/feature/42820-the-month-in-techno