Yet rarely has the district's longtime status as a hub of black history and culture been properly recognized, at least on a grand scale.
The campaign kicked off in September and runs through the end of this month. But officials hope it will continue to attract visitors by offering a more culturally inclusive view of the city.
"African-American history and culture has been central to Washington since its inception in 1791," said Mayor Anthony A. Williams. "The depth and breadth of [that] experience in the District of Columbia is unrivaled. ... This is a fitting way to mark the importance and relevance of our rich heritage."
Blues & Dreams ties in with this year's 40th anniversary of the 1963 March on Washington, and the "I Have a Dream" speech that the Rev. Martin Luther King Jr. delivered on the steps of the Lincoln Memorial.
But long before the civil rights era, black Washingtonians were profoundly influencing the growth and character of the nation's capital.
Benjamin Banneker, a self-trained astronomer and mathematician, helped survey and lay out the Southern city. And before the Civil War, blacks were laborers, skilled craftsmen, drivers and entrepreneurs.
Over the years, even in the face of segregation, African-Americans created vibrant, thriving communities here.
For instance, Anacostia is where abolitionist Frederick Douglass settled years after escaping slavery in Maryland. He became the neighborhood's first black property owner in the 1800s, and today, Cedar Hill is open for visitors.
The Shaw neighborhood, birthplace of jazz great Duke Ellington, is in the city's historic U Street corridor. Dubbed "Black Broadway" by native Pearl Bailey, the area is said to predate Harlem as a mecca for black music and entertainment.
Such sites are incorporated into walking tours that are part of Blues & Dreams programming -- along with lectures, concerts, dance and theater performances and art exhibitions.
Perhaps the centerpiece event is the National Gallery of Art's major retrospective of Harlem renaissance collage artist Romare Bearden, on the first stop in a five-city American tour.
In the meantime, the Textile Museum has an African-American quilt exhibition with 20th-century handiwork from parts of the South. Representing an important component of U.S. history, they also reflect the diverse traditions of black quilters and their heritage.
Area restaurants have also gotten into the spirit, incorporating fanciful themed cocktails and soul-food dishes on their menus. Stop by CakeLove, a popular black-owned bakery on U Street, for a Blues & Dreams cupcake: vanilla pound cake, buttercream frosting, fresh raspberries and blueberries.
African-American Quilts From the Robert and Helen Cargo Collection (The Textile Museum, 2320 S St. N.W., 202-667-0441): Patchwork quilts, story quilts and more, each distinguished by color and design. Hailing from the South, primarily Alabama, these 20th-century quilts are made of such fabrics as flannel, twill, pillow ticking and feed sacks. The museum will also offer quilting demonstrations, live music and lectures. Runs through Feb. 29.
The Urban Experience: African-American History at Decatur House and Washington, D.C. (The Stephen Decatur House Museum, 1610 H St. N.W., 202-842-0920): A new permanent exhibit inside the former slave quarters of this National Historic Landmark uses artifacts and documents to examine the lives of free and enslaved blacks in Washington.