OUTDOOR FUNFranklin FleaAug. 20, 11 a.m.-6 p.m.Reading Terminal MarketFilbert between 11th and 12th streetsPay as you gofranklinflea.comOn Saturday, after you’ve finished your weekly Reading Terminal Market shopping, save room in your bag for a few trinkets from the Franklin Flea. The outdoor market takes place just outside Reading Terminal on Filbert Street, where you can browse booths selling vintage, reclaimed and locally made goods.40th Street Summer SeriesAug. 20, 6 p.m.Walnut Street Library201 S. 40th St.Freeuniversitycity.orgHead to West Philly for the penultimate 40th Street Summer Series event of the season. Starting at 6 p.m. the green space behind the Walnut Street Library comes alive with family-friendly activities, the aroma of food vendors and live music from the The Liberian Women's Chorus for Change.The Ultimate Summer CookoutAug. 21, noon-5 p.m. The Piazza at Schmidt’s1001 N. 2nd St. Freetheschmidtscommons.comThe Piazza throws what they’re calling an end-of-summer bash Sunday with live DJs, a performance from the West Philadelphia Orchestra and food and drink from neighborhood restaurants like Apricot Stone, Bar Ferdinand and El Camino Real. The best part, though, could be the trio of activities they’re bringing in: a water slide, Slip ‘N Slide and a zip line that promises a bird’s-eye view of the festivities. Bring your bathing suit!Caribbean FestivalAug. 21, noon-8 p.m.Great Plaza at Penn's Landing101 S. Columbus Blvd.Freedelawareriverwaterfront.comCelebrate the flavors, sounds and traditions of the Caribbean at this 30th annual hoopla along the Delaware. There will be grub from 14 Caribbean islands, a kids corner for family activities, a marketplace and live music from noon to 8 p.m. If you can’t make this, consider stopping by the Great Plaza on Saturday, Aug. 20 for the Festival of India happening from 1-6 p.m. Both festivals are part of the PECO Multicultural Series.MUSICPhiladelphia Folk FestivalAug. 18-21Harleysville1323 Salford Station Rd.$27.50-$240pfs.orgOn an 80-acre farm about 35 miles outside Center City, the Philadelphia Folksong Society hosts its 55th annual Philadelphia Folk Festival. Over the course of four days, you can catch countless folks acts like Los Lobos, Driftwood Soldier, Kaia Kater and the Pine Leaf Boys. Ticketing options include single-day passes or a camping option which allows you to pitch a tent for the whole weekend.2MilAug. 20, 9 p.m.Underground Arts1200 Callowhill St. $10undergroundarts.orgPhilly duo 2Mil bring '90s R&B vibes to the 21st century, with sexy alto vocals and female-empowering lyrics they write themselves. Catch them at Underground Arts this Saturday on the heels of the release of their debut album, “Millionaires.”THEATER"The Golden Gurls Live!"Aug. 19, 9 p.m.Tabu Lounge and Sports Bar200 S. 12th St. $15eventbrite.comFour Philly drag queens bring to life two complete episodes of 80s-90s granny sitcom “The Golden Girls.” Brittany Lynn, Pissi Myles, Bella Cane and Connor Michalchuk star as Dorothy, Blanche, Rose and Sophia, and welcome a slew of guest stars. Your ticket gets you a free Patron XO Cafe drink and a slice of cheesecake so you can munch and gossip along with the ladies.“Detroit” Through Sept. 3Sycamore Hill481 Ebelhare Road$25 suggested donationtheaterwithaview.comYou’ve been enjoying movies under the stars all summer, but how about open-air theater? Head to Pottstown for Theater With a View’s outdoor staging of “Detroit” at the lovely Sycamore Hill estate. The show follows a couple who invite over their new — and very strange — neighbors for a backyard barbecue. What follows is hush-hush, but let’s just say the hosts quickly regret extending the invite.GayFest!Through Aug. 27Various locationsquinceproductions.comPhiladelphia’s only LGBT theater festival continues with a performance by physical comedy troupe The Bang Group on Thursday and Friday, and the local premiere of “MMF” on Saturday. The show concerns a throuple — two men and a woman — who decide to put the kibosh on their polyamorous relationship.KIDSP.A.L.S. Summer EventAug.19, 3 p.m.Jewish Community Center1301 Springdale Road, Cherry HillFreejcfsnj.orgP.A.L.S., an organization working to “promote socialization among peers of children who are multiply disabled and require aide for communication,” wraps up its weeklong summer event with a special Disney presentation on Friday. Join them for a performance by Walnut Street Theater Group followed by an awards ceremony for participants.