Free. Reservations are required 3 weeks in advance for guided tours. A fee is charged for guided tours; student tours are free. A combination tour with the John and Mary Pappajohn Sculpture Park is available.
Tues.-Fri. 11-4 (also Thurs. 4-9), Sat. 10-4, Sun. noon-4. Closed major holidays. Allow 2 hours minimum.