$45; $20 (ages 3-11); $115 (family, two adults and two children ages 3-11).
Tours depart nightly at 7 p.m., mid-Mar. to late Oct.; at 6:30 p.m., rest of year. No tours given Jan. 1, July 4, Thanksgiving, Christmas Eve, Christmas and Dec. 31. Phone ahead to confirm schedule, as tours are sometimes canceled.