During the Open Season (May 19, 2017 -October 29) reservations are not made for groups fewer than five. Tours are offered as first-come-first-served. The site is open Wednesday-Sunday from September 1-October 29, 2017 from 9:30-5:00.
During the offseason (November 1, 2017- late May 2018), tours are offered by reservation only based on staff availability Monday-Friday. Please contact us at least two weeks in advance at 617-566-7937 to make your reservation, or email us. Should you email us, please indicate the desired date of your visit, morning or afternoon preference, number of people in your group, and provide a contact telephone number. During the winter months, and for safety, hazardous road conditions may result in the need to close the site. Should your tour be on a day that the site closes, we will contact you in advance to reschedule. For a listing of current blackout dates, please visit the "Alerts" section on our homepage.
PermitsSome uses of the site, including filming or photographing the interior for commercial purposes, require a permit. Download the application here. Please contact the Supervisory Ranger at 617-566-7937 or submit application by email to begin the permit process.