Cinco de Mayo is not only a Mexican holiday, but a shared day of pride and celebration for people from all over Latin America and the Caribbean. There were food, games, crafts, live music and performances by Maru Montero Dance Company. The festival was held on the Mall near the Sylvan Theater. 
Eastern Market Seventh Street SE Washington, DC
A free day-long celebration of music on five stages, crafts, children's rides 
Skydiving and naval flight demonstrations, Blue Angles, Snow birds, a mass jump by the 82nd Airborne and aerial acrobatics will all take place this weekend at the Joint Services Open House and Air Show.
Maryland Day university’s 150th Anniversary: more than 450 events, including tours, exhibits, live performances and sporting events.
Japanese Koto Ensemble with the Washington Toho Koto Society: koto—a string instrument that originated in China and came to Japan in the 7th–8th centuries
Live Sculptures by artists from Joe’s Movement Emporium 
Maryland Opera Presented Selected Scenes from “Il Matrimonio Segreto”
Costume Showcase 
Maryland Dance Ensemble: mini concert of dances 
Maryland’s Annual RED & WHITE Spring Football Game Byrd Stadium
Enjoyed a day full of fun, learning and discovery
U.S. National Arboretum
446 acres of fabulous flora and fauna, especially azalea and Asian collections, a virtual inner city park, are fascinating
National Capitol Columns stood at the east portico of the United States Capitol Building from 1829 to 1958
50-acre Brookside Gardens in Wheaton Regional Park, Silver Spring, MD 
full of colorful flowers in bloom and a wonderful green house installed with interesting art works in shapes of animals. “The artfully landscaped grounds, woods, formal gardens, aquatic gardens, a Japanese Tea House and conservatories displaying flowering plants and exhibits that change with the seasons.” 
http://www.mc-mncppc.org/parks/facilities/wheaton_regional.shtm
