Nine themed party areas with music, entertainment and buffets stand in for U.S. cities at this black-tie optional gala, co-hosted by young professional organizations Things to Do D.C. and the International Club of D.C.

A 40-piece orchestra swings in a ballroom styled after 1920s Chicago; The Oasis Band performs reggae and calypso hits in "the Caribbean"; Salsa dancers shake their hips to the sounds of the Origem band in "Miami." "Maui" offers a Hawaiian band and feast. Other exotic areas highlight New York (a nightclub setting with DJs), Las Vegas (mock casino gambling and a hotel buffet), Boston (live Irish music in a "pub" setting, complete with green beer), Los Angeles (karaoke) and Dallas/Fort Worth (Texas Hold 'Em poker games and barbecue all night). Most areas feature appropriate food and drinks exclusive to that room.

It's being held at the Wardman Park Marriott, one of Washington's largest hotels, and includes a top-shelf open bar all night, a balloon drop at midnight and a champagne toast. Reduced rates are available for hotel rooms. The $215 VIP option includes a reception, a three-course dinner, reserved seats, early admission and a private performance by a classical ensemble.

Get more details and purchase tickets at thingstododc.com or internationalclubdc.com.