Space is limited; advance registration suggested. Tickets available onsite with credit card only. Please arrive at the meeting location 15 minutes before the start of the tour to allow time for check in. For the courtesy of other guests, those arriving after the start time cannot be accommodated.
Ticket sales are final. Tours take place rain or shine, except in extreme weather conditions (heavy rain, sustained winds of 30mph or more, snowstorms, and a wind chill below 25 or heat index above 95 degrees).