Spend your weekend exploring the Smithsonians. Start at the National Museum of American History for an exhibit of the Stonewall Riots, then head to your choice of Smithsonian for a late-night celebration of the summer solstice Saturday. Wrap up your weekend chowing down on barbecue on Pennsylvania Avenue.

Friday

Illegal to be You: Gay History Beyond Stonewall

Continue LGBTQ Pride Month festivities at the “Illegal to be you: Gay History Beyond Stonewall” exhibit at the National Museum of American History. The exhibit honors the 50th anniversary of the Stonewall Riots, a series of protests led by gay rights activists in 1969. The display highlights key figures in the riots and includes artifacts and descriptions of the protest’s history.

National Museum of American History, 1300 Constitution Avenue NW, 10 a.m. to 5:30 p.m. Free.

Saturday

Smithsonian Solstice Saturday

Several Smithsonian museums will celebrate the summer solstice by staying open late and hosting a series of free parties and concerts. The National Zoo will feature a live DJ, food trucks and a bar open from 6 to 10 p.m. At the Museum of African American History and Culture, Karamo Brown from Netflix’s Queer Eye will join musician Big Freedia to discuss her memoir, “God Save the Queen Diva” at 7 p.m. Later on, the National Air and Space Museum will host a planetarium show where visitors can stargaze from 9:30 to 10:30 p.m. The Hirshhorn Museum and Sculpture Garden will host DJ battles and hip-hop cypher challenges.

Various locations. 10 a.m. to 11:59 p.m. Free.

Sunday

The National Capital Barbecue Battle

Sample barbecued classics like hamburgers, ribs and cheesesteaks cooked by pitmasters from all 50 states on the final day of a two-day D.C. barbecue battle. You can also sign up for the District’s first Nathan’s Famous Hotdog Eating Contest, which is usually held in New York City, and listen to live music from 30 different bands, including Everlast, Stacy Brooks and the Spin Doctors.

Pennsylvania Avenue between 3rd and 7th Streets NW. Starts at 11 a.m. Tickets start at $15.