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Top things to do in Tampa Bay this weekend: Tampa Riverfest, Star Wars Day

STILL ROLLING: Tampa Riverfest 2019

The Tampa Riverwalk has grown into one of the area's favorite gathering spots. Soak in it at the fifth annual Riverfest. It's a free lineup of entertainment, from concerts to events at eight locations along the river. There's a Taste of the Riverwalk from 6 to 9 p.m. Friday and a gorgeous nighttime hot air balloon glow at 8:30 p.m. Saturday (weather permitting). Curtis Hixon Park will have a Taco Festival from 10 a.m. to 8 p.m. Saturday. And don't miss the return of the Wiener Dog Derby, a full day of racing among eight divisions of dachshunds and small breed dogs (the Wiener Wannabe division for dogs that can fit into the starting gates comfortably), from 10 a.m. to 5 p.m. Saturday. There will be contests for best tail, best kisser, best nose and more. Benefits local animal rescue. Free to watch and $10 and up to compete at 600 N Ashley Drive, Tampa. Find the full Riverfest lineup at

STAR WARS DAY: May the Fourth Be With You

It started as an inside joke among Star Wars fans who greeted each other every May 4 with "May the fourth be with you." It has turned into a full-fledged geek holiday. Not that we need an excuse, but Saturday is full of Star Wars-themed parties and related nerdery.

Come dressed as your favorite character at the Castle in Ybor for its seventh annual Star Wars Party, with a costume contest, a Wookiee howling contest and themed drinks starting at 10:30 p.m. 2004 N 16th St., Tampa. $15.

The Clearwater Threshers game is getting in on the Star Wars action on Saturday with dozens of characters from the 501st Legion on hand for photos. A postgame fireworks show will be set to the film soundtracks. Gates open at 5 p.m. A $20 fundraising ticket for the East Lake Community Library includes all-you-can-eat hot dogs, hamburgers, cheeseburgers, peanuts, popcorn, chips, ice cream sandwiches, soft drinks and bottled water. $6-$10. The game starts at 6:30 p.m. Spectrum Field, 601 N Old Coachman Road, Clearwater.

GET LOST: Sunflower Mazes

The spring tradition of sunflower mazes returns this weekend at two of the biggest farms in the Hernando County town of Masaryktown. Both HarvestMoon Fun Farm, which has a 5-acre maze, and Sweetfields Farm, with its 6-acre labyrinth, open this weekend through the end of May, and both have a bushel of side activities such as farm animals, crafts, tractor and train rides and kiddie play areas. Flowers don't all open up and mature together, but that's part of the charm, Sweetfields' website notes: "As it undergoes its beautiful life cycle it brings through amazing butterflies, birds and memorable experiences." Both are open 10 a.m. to 3 p.m. Saturdays and Sundays. $11.95, 3 and younger free at HarvestMoon Fun Farm, 15990 Stur St. $9.50, $5 3-11, 2 and younger free at Sweetfields Farm, 17250 Benes Roush Road.

HEIRLOOMS: Collectors Day

More than two dozen private collectors will display personal treasures at the Tampa Bay History Center for the museum's annual Collectors Day. You'll find everything from political memorabilia and WWII propaganda posters to vintage cameras, action figures, Tampa cigar industry memorabilia and meteorites. Museum experts will offer guidance on caring for family heirlooms so you can take care of your own collections. Included with admission. $14.95, $12.95 for seniors, students and military, $10.95 7-17, free 6 and younger. 11 a.m. to 3 p.m. Sunday. 801 Old Water St., Tampa. (813) 228-0097.