Family weekend options: Children's Museum, Stiftungsfest

"RiverWorks Discovery" gives families an aquatic adventure as the new exhibit tells the story of the Mississippi River. Hands-on activities test knowledge about the river and teach about water cycles, locks and dams and trade. (9 a.m.-8 p.m. Fri.-Sat. 9 a.m.-5 p.m. Sun. $9.95. 10 W. 7th St., St. Paul. 651-225-6000.)

Minnesota's oldest celebration is an ode to Germanic culture. The weekend features German music, arts and crafts show, softball tournament and a variety of ethnic foods. (6:30 p.m. today; 9 a.m. Sat.-Sun. Wilkommen Park, 10 Central Av. S., Norwood Young America. 952-467-1800. www.stiftungsfest.org.)