TITANIC - THE ARTIFACT EXHIBITION

Actual artifacts, recovered from 2.5 miles below the surface of the North Atlantic. 8:30 a.m.-10:30 p.m. today. $8-$23. Science Museum of Minnesota, 120 W. Kellogg Blvd., St. Paul. 651-221-9444. www.smm.org.

WALK THROUGH HISTORY

Join a walking tour through the park and learn about Pike Island and the Dakota concentration camp along the Minnesota River, below the fort, established after the Dakota War of 1862. 11 a.m. today. Free. Fort Snelling State Park, 5701 Leavenworth Av. S., Mpls. 612-725-2724.

BLOOMING BUTTERFLIES

A gothic-arched structure resembling a caterpillar encompasses 3,000 square feet of screened habitat for butterflies. 10 a.m.-6 p.m. today. Free. Como Park Zoo, Midway Pkwy. and Kaufman Dr., St. Paul. 651-487-8200. www.comozooconservatory.org/como_zoo.

KAPOSIA DAYS

Sports tournaments, craft and flea market, classic car show, live entertainment and more. Various times and locations; see website for details. Fireworks, 10 p.m. today at South St. Paul High School, 700 2nd St. N., South St. Paul. 651-451-2266. www.kaposiadays.org.