18th Street Northwest is a prominent north–south thoroughfare in the Northwest quadrant

Quadrants of Washington, D.C.

Washington, D.C., is administratively divided into four geographical quadrants of unequal size, each delineated by their ordinal directions from the medallion located in the Crypt under the Rotunda of the Capitol...

 of Washington, D.C.

Washington, D.C.

Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a permanent national capital as permitted by the U.S. Constitution....

Part of Pierre Charles L'Enfant

Pierre Charles L'Enfant

Pierre Charles L'Enfant was a French-born American architect and civil engineer best known for designing the layout of the streets of Washington, D.C..-Early life:...

's plan for Washington, the roadway today is one of the main streets in the Adams Morgan neighborhood (the other being Columbia Road

Columbia Road

Columbia Road is a street in Washington, D.C., that forks from Connecticut Avenue north of Dupont Circle, and branches north and east through 16th Street to the McMillan Reservoir...

). 18th Street also travels through downtown Washington

Downtown Washington, D.C.

Downtown is a neighborhood of Washington, D.C., as well as a colloquial name for the central business district in the northwest quadrant of the city. Geographically, the area extends roughly five to six blocks west, northwest, north, northeast, and east of the White House...

 and the Dupont Circle and Mount Pleasant

Mount Pleasant, Washington, D.C.

Mount Pleasant is a neighborhood in the northwestern quadrant of Washington, D.C., the capital of the United States. The neighborhood is bounded by Rock Creek Park to the north and west; and Harvard Street, NW and the Adams Morgan neighborhood to the south; and Sixteenth Street, NW and the Columbia...

 neighborhoods. Many bars, nightclub

Nightclub

A nightclub is an entertainment venue which usually operates late into the night...

s, and restaurants are located on 18th Street in Adams Morgan, and on weekends it is frequently congested with cars and pedestrians, especially at last call

Last call (bar term)

In a bar, a last call is an announcement made shortly before the bar closes for the night, informing patrons of their last chance to buy alcoholic beverages. There are various means to make this signal, like ringing a bell, flashing the lights, or announcing orally.Last call times are often...

.