$6; $3 (ages 3-17, ages 62+ and students ages 18+ with ID); free (first Tues. of the month). Reservations are required 2 weeks in advance for guided tours.
Daily 9-8, Memorial Day-Labor Day; 9-4, Mar. 1-day before Memorial Day and day after Labor Day-Nov. 30; Mon.-Sat. 9-4, rest of year. Phone ahead to confirm winter and holiday schedule. Allow 1 hour minimum.