Center free. Estate tour $45; reservations are required.
Center and gardens Thurs.-Sun. 8:30-4. Ninety-minute estate tours depart Thurs.-Sun. every 15 minutes 9:15-10:15, 11:15-noon and 1:30-2:30; guests meet at the center and are shuttled to the house. Estate tour tickets are made available for purchase in monthly blocks on the 15th of each month.