Here are 16 events happening across metro Atlanta this weekend:

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Cobb

Polar Plunge. 11 a.m. Saturday, Feb. 22. Free to plunge, various incentive levels such as $50 for a T-shirt and fundraising is encouraged. Acworth Beach, 4425 Beach St., Acworth. https://www.classy.org.

Go “freezin’ for a reason” as you plunge into icy-cold waters to help raise money for the Special Olympics. Live music, food and prizes will help keep the fun going, and prizes will be awarded in categories such as best costume and highest individual fundraiser.

Marietta Mardi Gras 5K Fun Run & Walk. 7 a.m. late registration/packet pickup, 8 a.m. 5K, 9 a.m. 1K, 9:15 a.m. $15 and up. Tot Trot, 9:30 a.m. Saturday, Feb. 22. Glover Park – Historic Marietta Square, 50 N. Park Square, Marietta. runsignup.com.

Dress up in your best Mardi Gras style and run in this family-friendly AJC Peachtree Road Race qualifier. The race is a fundraiser for the Junior League of Cobb-Marietta.

Marietta Square Farmers Market. 9 a.m.-noon Saturday, Feb. 22. 65 Church St. NW, Marietta. 770-499-9393. http://www.mariettasquarefarmersmarket.com/.

Choose from a large variety of fruits, veggies and other staples such as heirloom tomatoes, pattypan squash, cut flower arrangements, live plants and much more.

Rugby ATL vs. Rugby United New York. 3 p.m. Sunday, Feb. 23. $20 and up. Lupo Field at Life University, 1494 Barclay Circle, Marietta. https://www.rugbyatl.rugby/.

Cheer on Rugby ATL in the team's inaugural season and get to know why this sport is so popular internationally.

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DeKalb

Mardi Gras Parade. 2 p.m.-5 p.m. Saturday, Feb. 22. Free. Main Street, Stone Mountain. https://www.facebook.com.

Celebrate Mardi Gras in the city of Stone Mountain with a parade, live music, food and fun.

Tartan Trot. 7:50 a.m. Tot Trot, 8 a.m. one-mile fun run and 8:30 a.m. 5K and 10 K run/walk. Saturday, Feb. 22. St. Luke's Presbyterian Church, 1978 Mount Vernon Road, Dunwoody. http://tartantrot.com/.

Gather to the sound of bagpipes before competing in your choice of AJC Peachtree Road Race qualifiers. The races start and end at St. Luke’s Presbyterian Church.

Snow Mountain. 10 a.m.-8 p.m. Saturday, Feb. 22 and 10 a.m.-6 p.m. Sunday, Feb. 23. $34.95 and up. Stone Mountain Park, 1000 Robert E. Lee Blvd., Stone Mountain. 1-800-401-2407. https://www.stonemountainpark.com.

Snow Mountain wraps up another season this Sunday, so if you’d like to experience its 400-foot snow-covered tubing hill and other snowy fun, now’s your chance.

Wings and Wheels at the Dunwoody Library. 10 a.m.-3 p.m. Saturday, Feb. 22. Free. Dunwoody Library, 5339 Chamblee Dunwoody Road, Dunwoody. 770-512-4640. events.dekalblibrary.org.

Celebrate We Love the Library Day with plenty of activities, including getting to know parrots and operating model trains. Refreshments, crafts and photo opportunities are also offered.

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North Fulton

Alpharetta Restaurant Week. Starts Saturday, Feb. 22 and continues until Saturday, Sept. 29. Special three-course dinner menu $20-$45, three-course lunches $15-$20. Participating restaurants in Alpharetta. awesomealpharetta.com.

Dine out for a deal during Alpharetta Restaurant Week, when participating restaurants offer fixed-price menus at discounted prices.

Bar & Bat Mitzvah Expo. 1:30-4:30 p.m. Sunday, Feb. 23. Free. The Hotel at Avalon, 9000 Avalon Blvd., Alpharetta. 770-744-5750. atlantamitzvahconnection.com.

Meet all the vendors you’ll need for your son or daughter’s big day and sample free food and drinks. Your tweens will also be able to have fun with interactive activities.

Habitat Hike. 11 a.m.-noon Friday, Feb. 21. Included with general admission of $10 adults, $7 seniors (age 65 and up) and students (age 13-18, $6 kids (age 3-12) and free for ages 2 and under and CNC members. Chattahoochee Nature Center, 9135 Willeo Road, Roswell. 770-992-2055. chattnaturecenter.org.

Docents will lead habitat hikes that will encourage you to see habitats everywhere you go.

Big & Little Chef: Picnic Time. 10 a.m. Saturday, Feb. 22. $75 for parent/child combo. Alpharetta Commons, 4305 State Bridge Road, Alpharetta. ww4.publix.com.

Team up with your child age 5-12 to make some new twists on picnic fare, including extra crispy baked chicken and Italian BLT Pinwheels.

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Gwinnett

Greenwood Culture Fest. 10 a.m.-2 p.m. Saturday, Feb. 22. Free admission. Lucky Shoals Park, 4651 Britt Rd., Norcross. 770-723-9516. https://www.facebook.com.

Celebrate Black History Month with food, fun and more at the Greenwood Culture Fest in Norcross.

Arbor Day Celebration. 8 a.m.-noon Saturday, Feb. 22. Sims Lake Park, Suwanee Dam Road, Suwanee. 770-904-3381. https://www.suwanee.com.

Volunteer to plant trees in honor of Arbor Day on Saturday, Feb. 22. Register by calling the number listing above or send an email to betinehart@suwanne.com.

Broad St. Film Fest. Starts at 4 p.m. Friday, Feb. 21 and 7:30 a.m. Saturday, Feb. 22. $25 and up. Eagle Theatre, 5029 West Broad St., Sugar Hill. https://broadstreetfilmfest.com/.

Enjoy two days of film screenings, networking panels and more during the inaugural Broad St. Film Fest.

Let's Hike! Blood Mountain. 8 a.m.-5:30 p.m. Saturday, Feb. 22. $10 Shorty Howell County Park, 2750 Pleasant Hill Road, Duluth. 678-277-0905. https://www.facebook.com.

Take a naturalist-guided trip up to Blood Mountain Summit, one of the highest points of the Appalachian Trail in the state. The hike is for ages 12 and up and is of medium to moderate difficulty. Pre-register online or by calling 678-277-0905.