Adams Morgan area of Washington, D.C. Adams Morgan is a culturally diverse neighborhood in Northwest Washington, D.C., centered at the intersection of 18th Street and Columbia Road. Adams Morgan is considered the center of Washington's hispanic immigrant community, and is a major night life area with many bars and restaurants, particularly along 18th Street (the primary commercial district) and Columbia Road. Much of the neighborhood is composed of 19th- and early 20th-century row houses and apartment buildings.