Orrs Island in Harpswell
Inhabited since 1762, the island has many historic structures, such as the 1855 Meetinghouse and 1900 Chapel, that have survived the test of time. Part of the town of Harpswell, it is home to the Coastal Studies Center of Bowdoin College, on the shore of Harpswell Sound near Casco Bay. Several wooded walking trails offer ocean views.