Otis

Used mostly for invite-only soirees (you can, however, get in carte blanche if you're willing to pay anywhere from $250 to $1,000 for a membership), this polished new club near Union Square sits on charming Maiden Lane. Its cozy and well-lit interiors host a number of parties, attracting crowds ranging from upscale design firm associates and former Mayor Willie Brown to plucky alternative scenes.

• Hours: Sun,Sat 8pm-2am, Mon-Fri 5pm-2am