The main room, with its high ceilings and slick concrete-and-metallic interiors, is cavernous--the dance floor accommodates more than 900 people and there are two bars along the side to make sure everyone's happy. If the gyrating masses get to be too much, revlers can head to the upstairs lounge, where a third bar is occupied by everyone from drag queens to black-clad hipsters draped across velvet banquettes and ottomans.

http://mezzanine.tribe.net