The weekend’s best in nightlife, music and art. For even more, check out Nightlife Agenda.

Friday-Sunday: After its opening was postponed by more than three months, the new Dolcezza Gelato Factory and Coffee Lab will finally open near Union Market. The 4,000-square-foot Northeast warehouse is the production hub for the rapidly expanding business, which now includes four retail storefronts, plus restaurants serving Dolcezza sweets. As of Friday, it's also a walk-in gelato and coffee shop, where you'll be able to taste freshly churned gelatos and sorbets, served in porcelain or glass with real silverware; or drink a coffee or espresso from Stumptown. Friday through Sunday, the shop will offer tours at 2 and 4 p.m. daily; pints (usually $10.50) will be half-price. The shop, at 550 Penn St. NE (202-333-4646), opens at noon Friday. Read more about the factory and its coffee program here.

Friday-Aug. 31: Even amid the high-definition, color-saturated landscape that is 21st-century popular culture, the works of Andy Warhol, Roy Lichtenstein and the pop artists of the 1960s still possess a futuristic vibrancy. Theirs are among "Pop Art Prints," one of the perfect-for-spring exhibitions opening this week at the Smithsonian American Art Museum.  The collection of 37 prints that obscured the lines between art's high-brow and low-brow, including works by Robert Rauschenberg, Jasper Johns, Robert Indiana and Mel Ramos.

Friday-May 4: Diplomacy wonks will be paying close attention to "Camp David," a dramatic adaptation of 1978's 13-day Middle East peace summit between President Jimmy Carter (Richard Thomas), Israeli Prime Minister Menachem Begin (Ron Rifkin) and Egyptian President Anwar Sadat (Khaled Nabawy). The play, which makes its world premiere at Arena Stage, is written by Pulitzer Prize-winning author Lawrence Wright, a staff writer for the New Yorker. The opening performance is Friday at 8 p.m. Tickets are $55-$110; get them here.

Friday: At its best, Detroit duo Dale Earnhardt Jr. Jr. makes irresistibly catchy lo-fi electro-pop songs with a sheen of new-wave nostalgia in the bubbling guitar lines and skewed synth lines. (Case in point: The standout single “If You Didn’t See Me (Then You Weren’t on the Dancefloor.)") Dale Earnhardt Jr. Jr. performs at the 9:30 Club with Chad Valley before heading over to Little Miss Whiskey’s Golden Dollar, where they’ll DJ at a free party. (Doors at Little Miss Whiskey’s open at 10, but there’s no telling what time the band will start its set.) Tickets for the 9:30 Club show are $16; get them here.

Saturday: The National Cherry Blossom Festival kicks off Thursday -- though no, there will be no actual blossoms till, perhaps, the first week of April -- and one of the marquee events of the festival is the National Cherry Blossom Festival Family Days blowout at the National Building Museum, where the kids of all ages can enjoy the warm weather and take part in hands-on activities, art demonstrations, and indoor and outdoor performances that explore Japanese arts and design. The free festival runs Saturday from 10 a.m. to 4 p.m., and Sunday from 11 a.m. to 4 p.m.

Saturday: The Environmental Film Festival kicked off this week and continues through March 30 with plenty of fascinating movies. Anyone who fell in love with D.C.'s snowy owl, which is currently recovering at the National Zoo after a run-in with a Metro bus, might be interested in Saturday's free screening of the  "Magic of the Snowy Owl"  Sure, you could watch the whole thing -- an episode of PBS's "Nature" -- online, but then you wouldn't get to check out a live owl display. Steve Huy, of research group Project SNOWstorm, will answer questions from 10:30 a.m. to noon. The film screens at 1 p.m. Saturday at the National Wildlife Visitor Center in Laurel. Read: Our list of our picks from the Environmental Film Festival.

Sunday: Amsterdam Falafelshop has, for a decade, required a trip to Adams Morgan for that tasty, do-it-yourself falafel and perfectly fried frites. Beginning this weekend, the shop begins its quest for falafel dominance: It's opening a second location at 14th Street NW between T and Swann streets. One big difference is that you'll be able to choose not only between a regular and a large, but also pick a slightly less carbo-loaded option: A falafel bowl. Read: Amsterdam Falafelshop 14th Street to open March 23.