You're in Washington during the sweatiest, most humid months of the year. But don't let that slow you down.
1. Go to a Nationals game.
Even if you don't like baseball, this is an outing everyone can enjoy. It's fun for the under-21 crowd, and cheap seats are almost always available during the week. Relax, chat, eat some Shake Shack and watch the fourth-inning Presidents Race, realizing that only in Washington would a bunch of adults dressed like dead presidents run around a baseball field. Nationals Park, 1500 South Capitol St. SE. www.nationals.com. $13 and up.
2. Check out Jazz in the Garden.
The free Friday concerts in the National Gallery of Art's Sculpture Garden are a summer staple. If you're planning to attend with a group, you may want to send a delegate or two from your cohort of fellow interns to stake out a prime spot. The Sculpture Garden cafe sells sangria, and you can bring your own snacks. Concerts are held weekly from 5 to 8:30 p.m. through Aug. 29. Sixth Street and Constitution Avenue NW. www.nga.gov. Free.
3. Eat a half-smoke.
Ben's Chili Bowl is a spot you'll hear about often. The U Street landmark is famous for its signature half-smoke, a smoked pork-and-beef sausage that's grilled and served on a hot dog roll. Order yours "all the way" with mustard, onions and chili. Bill Cosby loves it and you will, too. 1213 U St. NW. www.benschilibowl.com.
4. Walk the Mall after sunset.
You've seen the Mall by day, but unless you've experienced it at night, you haven't really seen it at all. The illuminated monuments and memorials exude an extra layer of gravitas and tranquility after dark, and because the Mall is National Park Service property, it never closes. Bonuses: Fewer tourists, less heat. Perfect. The Mall, between Independence and Constitution avenues from First Street to 23rd Street. www.nps.gov/nama.
5. Visit Eastern Market.
Capitol Hill's Eastern Market has served as the District's best source for fresh fruit, meat and vegetables for 136 years. It's a great place to enjoy a moveable feast as you nibble from various vendors: Don't miss the blueberry buckwheat pancakes at the Market Lunch stand, though be prepared to stand in a long line. Also on weekends, the Eastern Market flea market stocks antiques, clothing, jewelry and more. 225 Seventh St. SE. www.easternmarket-dc.org. Open Tuesday-Friday 7 a.m. to 7 p.m., Saturday 7 a.m. to 6 p.m. and Sunday 9 a.m. to 5 p.m.