A half-century ago, a new outdoor concert venue opened in the brand-spanking-new community of Columbia. At first envisioned as primarily an outdoor home for the National Symphony Orchestra, Merriweather Post Pavilion quickly expanded its offerings — and thank goodness it did, as within its first few years, Merriweather played host to such acts as Jimi Hendrix, The Doors and, perhaps most memorably, The Who, with a newly born English band named Led Zeppelin as their opening act. Come celebrate that 50-year milestone on Saturday, with a golden anniversary concert featuring Jackson Browne (who recorded much of his 1977 live album, "Running on Empty," here), Willie Nelson & Family and Father John Misty, with Grace Potter hosting. Should be a fine kickoff to the next 50 years. 6 p.m. at Merriweather, 10475 Little Patuxent Parkway. $55-$125. merriweathermusic.com.
Bars on the Bay
A celebration of Baltimore's hip hop scene, featuring performances from AZ with DJ Doo Wop, King Los, TT the Artist, Yvng Swag, Dyson Alexander, Billy Lyve, Bossman, Starrz, MC Bravado, Eze Jackson, Bond St. District, Bmore Than Dance and others. 2 p.m. Saturday-2 a.m. Sunday at Malibu Beach Bar, 8247 Eastern Ave. $30-$175. "Bars on the Bay: Baltimore's Hip-hop Festival" on facebook.com.
Charm City gets a little bit hotter, thanks to this cooperative effort by Baltimore and Washington to spice things up as much as local standards will allow. The steamy fun begins at noon Saturday with a parade beginning in the 900 block of 33rd St., then heading along The Alameda and into Clifton Park via St. Lo Drive. Once there, it's Carnival time, with music, dancing, colorful costumes and dozens of stalls offering Caribbean food, crafts and more. Festival runs 5 p.m.-10 p.m. Saturday, noon-9 p.m. next Sunday. $15-$20. baltimorecarnival.com.
Born in Baltimore Film & Photography Festival
Some 35 films and 28 photographs, all either about Baltimore or the work of artists who live here. Organized by Baltimore Youth Film Arts. 3 p.m.-8 p.m. Saturday at the Creative Alliance, 3134 Eastern Ave. Free. borninbaltimore.org.
'War for the Planet of the Apes'
The apes are back, trying to peacefully co-exist with man, but some humans have a different idea. Bad move by the humans. In theaters Thursday.
Spend the night sleeping alongside (well, nearly alongside) the animals. For adults 21 and over who have always dreamed of waking up next to an elephant. 6 p.m. Saturday-9:30 a.m. next Sunday at the Maryland Zoo in Baltimore, 1 Safari Place. $100-$125. marylandzoo.org.
'Mom's Night Out: Summer Break Tour'
Kristin Hensley and Jen Smedley, the women behind internet sensation #IMOMSOHARD, find the humor in being a mom. As their Facebook pages put it, "Two moms. (Not married.) (Actually, married. Just not to each other.) Four kids. Two husbands. 3 dogs. Minimally, 2 glasses of wine. Lots of laughs." 7 p.m. Saturday at the Modell Performing Arts Center at the Lyric, 140 W. Mount Royal Ave. $35.75-$45.75. modell-lyric.com.
A weekend of dance, beginning with an evening of performances from local dance troupes on Friday, moving on to a day of beginner and family-friendly workshops on Saturday, then culminating on Sunday with a performance piece called "Women," choreographed by Nicole Bindler in collaboration with three dancers from the Palestine-based Diyar Dance Theater. 7 p.m.-10 p.m. Friday ($10), 10 a.m.-3 p.m. Saturday ($5-$20), 7 p.m.-9 p.m. next Sunday ($5) at The Motor House, 120 W. North Ave. "Warm Up Dance Festival" on facebook.com.
'Victory for a Dime: The Fighting Comic Books of the Second World War'
More than 30 comic-book covers, blown up to poster size, attest to the fervor with which comics artists created superheroes anxious to fight for the Allied cause during World War II. Superman, sure, but plenty of others, too. Opening reception set for 6 p.m. Wednesday, to include a presentation from guest curator Mark Furtig, in the School of Design Gallery at Stevenson University, 1525 Greenspring Valley Road. On exhibit through Sept. 29. Free. stevenson.edu.
Bastille Day Celebration
Celebrate liberty, equality and fraternity with a three-course prix fixe dinner ($53.67 per person), then move on to the rooftop skybar for cake and a champagne toast. 7 p.m. Friday at the Lord Baltimore Hotel, 20 W. Baltimore St. "Bastille Day at The Lord Baltimore Hotel" on facebook.com.