In a space known for many years as Badlands gay club and more recently as Apex, Phase 1 of Dupont
((1415 22nd St.
, 202-974-6832) opened in 2012 - it's a second branch of the city's long-running Phase 1 women's club in Capitol Hill. It's just off P Street, near several other gay bars that have been around for quite a while (Omega, the Fireplace). This lively dance club is open Thursday through Saturday nights, and also for some occasional special events. There are a few spaces inside for mingling - a video bar, dance floor, and some other nooks.
The original Phase 1 (525 8th St. SE, 202-544-6831) nightclub in Capitol Hill is open on the same nights as well as on Sundays, and for some special parties on Wednesdays.