LINDEN HILLS FESTIVAL: Parade, chess tournament, live music, art fair and more. 11 a.m.-5 p.m. today. Free. Linden Hills Park, 3100 W. 43rd St., Mpls. lindenhills.org/festival.
SPRING FESTIVAL: Family activities and entertainment. 11 a.m.-4 p.m. today. Free. Holz Farm, 4665 Manor Dr., Eagan. cityofeagan.com/index.php/parks/ holz-farm.
EXPOS AND SHOWS
COMICON: Appearances by comic book creators, programs, art show, costume contest and more. 10 a.m.-5 p.m. today. $12. State Fair Grandstand, Dan Patch Av. and Nelson St., Falcon Heights. www.mcbacomicons.com.
MANTICON: A convention celebrating military science fiction literature. 2-11:30 p.m. Fri.; 9 a.m.-11:30 p.m. Sat.; 9 p.m. next Sun.-4:30 p.m. May 25 $60. Hilton Hotel, 3800 American Blvd. E., Bloomington. www.manticon.org.
VINTAGE AND CLASSIC BICYCLE SWAP MEET: 10 a.m.-4 p.m. Sat. Antiquified, 2430 NE. California St., Mpls. 612-789-1989. www.antiquified.com.
VALLEYFAIR: Hundreds of rides and "Dinosaurs Alive," an interactive and educational experience with animatronic dinosaurs. 10 a.m.-8 p.m. today-Thu.; 10 a.m.-10 p.m. Fri.-next Sun. Valleyfair, Hwy. 101 and Valleyfair Dr., Shakopee. 952-445-7600. www.valleyfair. com.
BLACK FOREST INN 50TH ANNIVERSARY CELEBRATION: Music, games and more. 11 a.m.-8 p.m. today. Free. Black Forest Inn, 1 E. 26th St., Mpls. 612-872-0812. www.blackforestinnmpls.com.
MINNESOTA MONTLY GRILLFEST: Sample grilled foods, summer wines and specialty beers. 1 p.m. today. $45. CHS Field, 360 N. Broadway St., St. Paul. www.minnesotamonthly.com.
NORTHEAST BEER GARDEN: Sample beers, hear live music and view local art during Art-a-Whirl weekend. 11 a.m.-6 p.m. today. Free. Dangerous Man Brewing Company, 1300 2nd St. NE., Mpls. 612-236-4087. dangerousman brewing.com.
DANDELION DAY: A celebration of Harriet Godfrey's introduction of dandelion seeds to the St. Anthony Falls area. Learn how to make dandelion necklaces, bracelets and crowns and get recipes for cooking with dandelions. 1-4 p.m. today. Free. Ard Godfrey House, 28 University Av. SE., Mpls. 612-813-5300. tinyurl.com/pgcy3nu.
UROC COMMUNITY DAY: Demonstrations, live music and food. 2-7 p.m. Wed. Free. University of Minnesota Urban Research and Outreach/Engagement Center, 2001 Plymouth Av., N., Mpls. 612-626-8762. www.uroc.umn.edu.
"INSPIRING BEAUTY" FASHION SHOW AND PREVIEW PARTY: A gala soiree for the new exhibit "Inspiring Beauty: 50 Years of Ebony Fashion Fair." 8 p.m. Thu. $25. Minnesota History Center, 345 W. Kellogg Blvd., St. Paul. 651-259-3000. www.mnhs.org.
SUMMIT AVENUE WALKING TOURS: A 90-minute tour highlights the Gilded Age mansions in the area. 2 p.m. today, next Sun.; 11 a.m. & 2 p.m. Sat. $8-$12. James J. Hill House, 240 Summit Av., St. Paul. 651-259-3000. www.mnhs.org.
MEMORIAL DAY WEEKEND AT THE LANDING: Meet fur traders and farmers. Play old-fashioned games and ride a horse-drawn trolley. 10 a.m.-5 p.m. Sat.; noon-5 p.m. next Sun. $3-$5. The Landing, 2187 E. Hwy. 101, Shakopee. 763-559-6700. www.threeriversparkdistrict.org.
OPENING WEEKEND AT HISTORIC FORT SNELLING: Visit with costumed interpreters and learn about life in early Minnesota. 10 a.m.-5 p.m. Sat.; noon-5 p.m. next Sun. $6-$11. Historic Fort Snelling, 200 Tower Av., St. Paul. 612-726-1171. www.mnhs.org.
SCIENCE AND NATURE
"SPACE: AN OUT-OF-GRAVITY EXPERIENCE": Explore the conditions of human space exploration and the science that makes it successful in this hands-on exhibit. $15-$24. Science Museum of Minnesota, 120 W. Kellogg Blvd., St. Paul. 651-221-9444. www.smm.org.
MINNESOTA ZOO: View more than 504 species on six trails. 9 a.m.-6 p.m. Sat.-next Sun. $12-$18. Minnesota Zoo, 13000 Zoo Blvd., Apple Valley. 952-431-9500. www.minnesotazoo.org.
FREE FAMILY FUN DAY: Explore the park reserve and discover native tree species and how to identify them along with the creatures that call them home. 3 p.m. next Sun. Free. Richardson Nature Center, 8737 E. Bush Lake Rd., Bloomington. 763-559-6700. www.threeriversparkdistrict.org.
COMO-HARRIET STREETCAR LINE: 12:30-8:30 p.m. today, Sat.-next Sun.; 6:30-8:30 p.m. Fri. $2. Como-Harriet Streetcar, Linden Hills Station, W 42nd St. and Queen Av. S., Mpls. 952-922-1096. www.trolleyride.org.
A WORLD OF UPSTANDERS: A champagne and dessert gala with guest speaker Eli M. Rosenbaum to benefit human rights programs. 7 p.m. Tue. $50. Woman's Club of Minneapolis, 410 Oak Grove St., Mpls. 651-695-7261. worldwithoutgenocide.org.