One of D.C.'s most popular dance clubs is a great space, but only if you like your dance floor crowded—which it tends to be, despite the cavernous space and seven bars. When you need a breath of fresh air, enjoy the rooftop deck. Saturday is 18-and-over night, which can attract a younger crowd; expect long lines. Dress code calls for fashionable attire, no athletic wear. DJs and special guests are announced a week in advance on the radio and online.