$10; $8 (students and senior citizens with ID); $3 (ages 6-12); free (ages 0-5, military families and to all first Fri. of the month 6-10 p.m.). Off-site tours $10-$40. Schedule and fees may vary; phone ahead. Reservations are required for canoe tours.
Tues.-Fri. noon-6 (also first Fri. of the month 6-10 p.m.), Sat. 11-5, Sun. noon-5. An exhibition tour is available Sun. at 1. Off-site tours include a walking tour Sat. at 11, a bike tour every third Sun. at 10 and a canoe tour the last Sun. of the month at 9:30. Closed major holidays.