The Lincoln and Washington monuments stand out against the setting sun. Cherry trees rustle in the breeze, and the Potomac River ripples as the evening air cools. Aboard Boomerang Party Yacht's double-decker yacht, crew members in striped uniforms step behind a custom-built wooden bar, plying passengers with custom cocktails, frozen drinks, wine, and beer during lively afternoon, evening, and nighttime party cruises. Live DJs spin international, house, and electronic beats on a dance floor in the enclosed main cabin, prompting passengers to dance and scare away inquisitive fish. Panoramic views of the Capitol's historic structures and avenues surround passengers on a top deck outfitted with wraparound seating and light-blue cushioned benches. In addition to river trips, Boomerang's guides operate a fleet of party buses that embark on seasonal countryside vineyard and tubing tours, and explore D.C.'s nightlife scene with bar-hopping tours.