Halo was a high end gay bar located at 1435 P Street, NW in the Logan Circle neighborhood of Washington, D.C., United States. Founded in 2004 by Ed Bailey and John Guggenmos, Halo first gained attention by being one of the few smoke-free LGBT bars in Washington, D.C. before the citywide smoking ban was enacted in January 2007. Bailey and Guggenmos previously started other Washington, D.C. LGBT clubs and events including the Velvet Nation party at Nation, Tracks, Millennium at the 9:30 Club, Ozone, and Cobalt.