Lighthouse Passport Days have many tour excursions and experiences that are unique and only available on these days, as several of the lighthouses in Door County are not typically open to the public – Chambers Island, Plum Island, and Sherwood Point, for example. While you can see them from outside or from the water, Passport Days give guests access that is not available throughout much of the year.​​​​​​​ The Door County Maritime Museum and Lighthouse Preservation Society, Inc. is proud to be a founding partner of this incredible event. These fundraising weekends include all kinds of ways to see and experience the 11 historic lighthouses of Door County and those on the surrounding shoreline nearby. https://dcmm.org/door-county-lighthouse-passport-days/ for tour details and booking information