Summer may be coming to an end, but you can still enjoy the outdoors with Walkingtown DC tours, including "Rowdies, Madams, and Painted Women: An Adults-Only Tour of Hooker's Division." (Photo by Don Tanguilig)

Thursday, Sept. 22

Go (gr)ape

Who knew apes were such fine drinking companions? Sample and sip wines from more than a dozen local and international wineries at the National Zoo’s Grapes With the Apes event.

Capital Bikeshare Birthday Bash

On Tuesday, Capital Bikeshare — the purveyor of those omnipresent red rental bicycles you’ve no doubt seen around Washington and Arlington — ushered in its first birthday with another big milestone: its one-millionth ride. Help celebrate both accomplishments Thursday at Yards Park at the Capital Bikeshare Birthday Bash. The evening of entertainment promises live music from ’80s cover band the Reflex, moonbounce jousting, a hula-hooping area, $5 pints of New Belgium beer and an assembly of food trucks, including the popular Red Hook Lobster Pound and Eat Wonky. You can also show off your cycling skills with a paper route competition, which rewards throwing accuracy, and a slow bicycle “race,” which bestows accolades upon those who cross the finish line at the most snail-like pace (without putting down a foot). There are also prizes for speed: The first 1,000 attendees to arrive at the party get a free T-shirt.

Opera in the Outfield

For the fourth consecutive year, the Washington National Opera is bringing a live broadcast of a performance to Nationals Park. This year’s production is Puccini’s “Tosca.” The stadium’s normal concessions will be open for the event. Blankets are encouraged, and chairs are prohibited on the outfield grass.

Starting Thursday, Sept. 22

Art (e)Mergence

Thursday’s opening night party at the Capitol Skyline Hotel kicks off the (e)Merge Art Fair, which features the work of 75 curated artists from around the world.

Saturday Sept. 24

Walkingtown and Bikingtown DC

Cultural Tourism’s twice-yearly free tours of D.C. kick off Saturday. Take your pick from 175 possibilities, including a hike of the Arboretum’s gardens, a look at important Prohibition-related sites and the ever-popular Spies of Georgetown.

Zest Fest

If you haven’t visited NoMa (that would be the area north of Massachusetts Avenue near the New York Avenue Metro station) in a while, here’s the perfect opportunity to check out all of the new development. This 10-day festival, which kicked off on Tuesday, offers different programming every day, including storytelling, Zumba lessons, live music and a pop-up bicycle repair shop. One of the biggest events of the festival is Saturday’s Family Field Day from 4-9 p.m. There will be face-painting and food trucks, not to mention musical performances, dance demonstrations and games.

National Book Festival

Literature lovers, rejoice. This weekend is the return of the Library of Congress’s National Book Festival, and the lineup is as stacked as ever with some of the world’s best-known authors of fiction, nonfiction, children’s literature, poetry and just about anything else involving the written word. The festival takes place on the Mall, and this year it has extended to two days. Mark your calendar for appearances by Toni Morrison, Dave Eggers and even actress Julianne Moore, the author of three bestselling children’s books about Freckleface Strawberry, a character loosely based on her childhood.

Clarendon Day

The annual street festival features local artisans and live bands, and it has a focus on fitness and health.

Art for night owls

Get your fill of culture until 3 a.m. during Art All Night, D.C.’s version of Nuit Blanche. Wander between Warehouse Theatre, Goethe-Institut and Edison Place Gallery, to name a few of the venues, for a dose of exhibitions, performance art and DJs.

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