Hours: Tours depart every half hour Tues.-Thurs. 11-11:30, Fri.-Sun. 11-noon (also Sat. noon-1), Mon. at 11, early May-early Nov.; Tues.-Sun. 11-11:30 (also Fri. 11:30-noon and Sat. 11:30-12:30), Mon. at 11, in Apr.; Tues.-Sun. 11-11:30 (also Fri.-Sat. 11:30-noon), Mon. at 11, early-late Mar.; Wed.-Sun. at 11 (also Thurs.-Fri. at 11:30 and Sat. 11:30-noon), early-late Nov. Closed Memorial Day, July 4, Labor Day, Nov. 21 and day before Thanksgiving. Phone ahead to confirm schedule.