- “Smithsonian Sleepover at the American History Museum” will feature a chance for ages 8 through 12 to participate in an interactive exploration of the museum with quizzes, puzzles, games and craft projects. 7 p.m. to 9 a.m. $120 to $135. National Museum of American History, 14th Street and Constitution Avenue NW. 202-633-3030.
- “Live! Concert Series on the Plaza” will feature Mama Jama performing reggae. Noon to 1 p.m. Free. Woodrow Wilson Plaza, Ronald Reagan Building and International Trade Center, 1300 Pennsylvania Ave. NW. 202-312-1300.
- Jazz in the Garden at the National Gallery of Art will feature Black Masala. 5 to 8:30 p.m. Free. Sculpture Garden, National Gallery of Art, 7th Street and Constitution Avenue NW. 202-289-3360.
- Tambolero singer Emilsen Pacheco and the New York-based collective Bulla en el Barrio will present an evening of bullerengue, spotlighting the ancestral traditions of Colombia. 6 p.m. Free. Millennium Stage, Kennedy Center. 202-467-4600.
- The Yards Park Friday Night Concert Series will feature the 19th Street Band. 6:30 to 8:30 p.m. Free. The Yards Park, 355 Water St. SE. capitolriverfront.org.
- The U.S. Army Blues will perform big band music as part of the “Sunsets With a Soundtrack” series. 8 p.m. Free. West Steps, U.S. Capitol. usarmyband.com.
- “Jazz on the Hill” will feature Aaron L. Myers II. 8 to 11 p.m. No cover; $15 minimum. Mr. Henry’s Restaurant, 601 Pennsylvania Ave. SE. 202-546-8412.
Discussions and lectures
- Allison M. Kuchar, a certified health education and end-of-life specialist with Capital Caring Hospice, will discuss “What Is Hospice — Debunking the Myths,” about the true nature of hospice and palliative care. Noon to 1 p.m. Free. Georgetown Library, 3260 R St. NW. 443-417-3738.
- José Ballesteros will discuss his book “Knocking on the Door of the White House: Latino and Latina Poets in Washington, D.C. (2001-2009).” Joining him will be co-editor Carlos Parada Ayala, poets Samuel Miranda and Martha Sanchez-Lowery, and translator Deborah Sobeloff. 7 p.m. Free. Politics and Prose, 5015 Connecticut Ave. NW. 202-364-1919.
- The Center for Advancing Opportunity will present an advance screening of “Crown Heights,” the true story of Colin Warner who in 1980 was charged and convicted of a murder he didn’t commit. A Q&A will follow. 6 p.m. Free; reservations required. Moot Courtroom, University of the District of Columbia David A. Clarke School of Law, 4340 Connecticut Ave. NW. tinyurl.com/UDC-Crown-Heights.
- The Washington Improv Theater will present “Improvapalooza,” its annual celebration of experimental improv. 7:30 p.m. $15 to $40. Source, 1835 14th St. NW. witdc.org. The five-day festival will continue Saturday at noon and 6 p.m.; and Sunday at noon.
- A sustainability fair will showcase the initiatives of D.C. environmental groups and institutions, as well as the green program at the Fairmont Washington, D.C., Georgetown hotel. The event will include honey tastings from the hotel’s rooftop hives. 11:30 a.m. to 1:30 p.m. Free. Colonnade Room, Fairmont Washington, D.C., Georgetown, 2401 M St. NW.
- Mayor Muriel Bowser and the D.C. Department of Parks and Recreation will commemorate the reopening of the Friendship-Turtle Park Recreation Center with popcorn, a moon bounce, face painting and a fun wagon, from 4 to 8 p.m.; and a screening of the film “Teenage Mutant Ninja Turtles,” at around 8 p.m. Free. Friendship-Turtle Park Recreation Center, 45th and Van Ness streets NW. tinyurl.com/turtlepark.
- The Washington Nationals will play the New York Mets. 7:05 p.m. $12 to $370. Nationals Park, 1500 South Capitol St. SE. 888-632-6287. The series will continue Saturday at 4:05 p.m. and Sunday at 1:35 and 8:08 p.m.
- A guided garden tour will trace two centuries of landscape history reflected in 5.5 acres of heritage trees, heirloom plants and flowers, and abundant English boxwood. 10:30 to 11:30 a.m. $10; free for members. Tudor Place Historic House and Garden, 1644 31st St. NW. tudorplace.org.
- The Heurich House Museum will host a “Brewmaster Tour,” featuring a one-hour guided tour through the mansion and a half-hour craft beer tasting in the conservatory. 4 to 5:30 p.m. $25. Heurich House Museum, New Hampshire Avenue and 20th Street NW. heurichhouse.org.
- “Visit Dupont Underground” will offer a chance to explore the city’s newest art space — a former trolley station with 75,000 square feet of underground platforms and tunnels. 6 and 7 p.m. $16. Dupont Underground, 1500 19th St. NW. dupontunderground.org.