The best parties in DC are at Ultrabar Nightclub, an upscale four floor mega club in downtown Washington DC! www.ultrabardc.com
Ultrabar is an interesting character. The building itself used to be a bank at the turn of the 20th century, and has retained some of the original bank aspects. Ornate marble accents the bar area wall on the main floor, safe deposit boxes are illuminated behind colored glass in the basement vault (which is now a lounge level), true hardwood floors run throughout the club, and the original trim work and masonry has been fully restored but given a colorful paint job.
Combined with the modern LED lighting, Stainless steel accents, Marble bartops, Glass walls, and modern decor, it makes for an upscale, clean, and inviting atmosphere.