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

Martina Hingis, left, and Leander Paes, right, celebrated after scoring a point in the mixed doubles match during the first Washington Kastles' home match of the season at the Smith Center on Wednesday. (Photo by Toni L. Sandys/The Washington Post)


Through July 22:  The Washington Kastles, the District's World Team Tennis squad, is back for 2014, in search of a fourth consecutive WTT championship. Matches started Wednesday night, but this marks the first weekend; one big change this year is that the Kastles, who’ve previously played outdoors, in downtown Washington and more recently at the Wharf on the Southwest Waterfront, are moving indoors. The team will play its home matches at George Washington University's Smith Center. But there are still plenty of big stars; Martina Hingis is anchoring the squad. Venus Williams joins the Kastles for next Wednesday's match against the Texas Wild, which caps a four-matches-in-four-days homestand that begins Sunday at 7 p.m. Tickets are $8-$80.

Friday:  Mandu, the city's go-to for Korean fare, recently kicked off a monthly event called Anju, a late-night takeover that chucks Mandu's usual menu for one-night-only Korean-inspired bar snacks, one Friday of the month from 10 p.m. to 1 a.m. This week brings one of the summer's most interesting collaborations, with Chef Kyle Bailey of Neighborhood Restaurant Group (ChurchKey, Arsenal) and Pastry Chef Tiffany MacIsaac (late of ChurchKey, Buzz) making their versions of Korean food.

Saturday: This weekend marks the 150th anniversary of the Battle of Fort Stevens, the 1864 Civil War battle that was the only skirmish to be fought in the District, in the area of what is now Georgia Avenue. Confederate troops actually retreated before the fighting became too intense, but it’s an interesting bit of local history: President Abraham Lincoln, during the battle, watched from the ramparts at Fort Stevens and came under enemy fire. The battle will be commemorated with two days of living-history events at Fort Stevens and Alexandria's Fort Ward, where the highlight will be a reenactment of the clash. On Saturday at 2 p.m., Fort Ward in Alexandria will host a reenactment of the battle, with more than 100 troops and cannons on both sides, playing out the major highlights with narration from a historian. The suggested donation to the event each day is $2 for adults and $5 for families.

Saturday: For the past seven years, the Girls Rock! DC summer camp has put the tools for making a little rock-and-roll into the hands of girls ages 8 to 18.  Camp for the girls is a raucous blur of band practices and instrument lessons, T-shirt making, deciding on band names and learning the fine art of giving your fans an over-the-top show. The girls choose rock instruments they've always wanted to try, whether it's turntables or drums, when they apply. And at week's end, the impromptu bands and DJ crews perform their songs or craft a party-starting DJ set for a gig at one of the city's bigger venues. Camp now runs two weeks, so this Saturday will bring the first of two camper concerts; catch Showcase 1, featuring the pint-sized rockers ages 8 to 12, at the Black Cat.  Doors open at 3 p.m. Tickets are $15.

Saturday-Aug. 9: For a glimpse of contemporary art’s next generation, Connersmith’s annual exhibition "Academy 2014,"  featuring the work of young upstarts from such institutions as American University, Corcoran College of Art and Design and Baltimore's Maryland Institute College of Art, is a summertime must-see. Get up to speed on what's happening in the art world Saturday, when the Trinidad gallery hosts a free opening for the show, from 6- 9 p.m. at Connersmith.

Sunday:  After a month of hope, heartbreak and the awesomeness of Tim Howard, the final match of the 2014 World Cup, pitting Germany against Argentina, takes place Sunday at 3 p.m. Millions of viewers will be tuned in, but make sure you're not stuck watching on a small screen: Pack a picnic, bring the family, and head to National Harbor's World Cup watch event, where a 32-foot LED screen by the Potomac River will show all of the action.

Sunday: The Capital Fringe Festival is more than just plays: The two-week festival also brings some great music to Fort Fringe. Sunday is an especially strong pairing for a night dubbed "Africa, Center of the Universe." Headlining is Chop and Quench, an Afrobeat band made up of performers from "Fela!: The Musical," including Tony-nominated singer Sahr Ngaujah. More than just a show band, the unstoppable Chop and Quench mixes well-known Fela Kuti tunes with dynamic original compositions. DJ Underdog spins Afrobeat tracks between sets and after the show. Doors open at 7 p.m., and the tunes flow until 1 a.m. The show is free.

Saturday-Sunday:  As the singer and face of 10,000 Maniacs through 1993, Natalie Merchant was one of the sirens of college rock. But in the years since she left the band -- which did everything from recording one of the 1990s most memorable "MTV Unplugged" episodes to playing the inauguration of President Bill Clinton -- she's been largely a solo operation, flitting between various concepts on each album. This year saw the release of a self-titled record, the first album of originals in 13 years; Merchant arrives at Washington's Lincoln Theatre this weekend to perform tracks from that work, and plenty of her oldies. Tickets are $55.