My daughter and her BF took me to Niantic, CT where there is an amazing kind of outdoor used bookstore called ‘The Book Barn’. This place was packed with families. Several buildings with endless used books amid garden paths sculptures, and playscapes. The buildings are underneath trees, protecting the books somewhat from rain and sun. I don’t know if the books are left out all year or what, but I didn’t smell anything musty at all. It was a heavenly place! Highly recommend.