Mighty monarch migration, plus 8 other free things to do

Every year, the monarch butterflies go on a 2,300-mile migration from Minnesota to Mexico. Join in the festivities that include native plant sales, art activities, music, dance and food. (10 a.m.-4 p.m. Sat. East of Lake Nokomis Community Center, 2401 E. Minnehaha Pkwy., Mpls. monarchfestival.org)

Food truck fans have the final word in this culinary battle where they’ll vote for the best Southern/Mexican, Asian, grilled, dessert and street foods. (11 a.m.-8 p.m. Sat. 425 Rice St., St. Paul. facebook.com)

It’s a shoppers paradise for those who like to curate a unique look. Small businesses, artists and vintage lovers can find one-of-a-kind items at this community party. (11 a.m.-6 p.m. Sat. 5th St. NE. & E. Hennepin Av., Mps. mothoddities.com)

The yearly tribute to the town’s history with the railroad baron includes the Rails & Ales craft beer festival, walking tour, night street market, dachshund races, music, a carnival and hanging out with llamas. (5-10 p.m. Fri.; 8 a.m.-10 p.m. Sat.; 8 a.m.-4 p.m. Sun. Various locations in Minnetonka. jamesjhilldays.wayzatawestmetrochamber.com)

Immerse yourself in the Hellenic culture with food, and music and dance performances. (2-9 p.m. Fri.; noon-9 p.m. Sat.; noon-5 p.m. Sun. St. Mary’s Greek Orthodox Church, 3450 Irving Av. S., Mpls. mplsgreekfest.org)

This traveling civic-improve comedy tour uses theater and comedy to bridge divides and promote dialogue in communities. (11 a.m.-2 p.m. Sat. Center for Performing Arts, 3754 Pleasant Av., Mpls. kingfield.org)

Bands perform live soul music and local artists will have works on display and for sale. (4-7 p.m. Sat. Central Park, 8200 Noble Ave N., Brooklyn Park. brooklynpark.org)

Are you a music nerd? Then join musician and host Nato Coles, answering questions about all things rock ‘n’ roll and also hip-hop, punk, country and metal. (8-10 p.m. Sept. 8. Palmer’s Bar, 500 Cedar Av., Mpls. palmers-bar.com)