Topographic, satellite, and NOAA historical chart layers. Every marker opens a field card. Tap a layer button to switch views.
Levett's 1623 settlement site
Endicott-era coastal artillery
Gilded-Age summer resort
Dixie Bull investigation zone
Indigenous cultural landscape
Layered travel corridors
The 150-ft cliff at the island's eastern point
1917 Navy radio hut on the north bluff
The main reservation south of Battery Foote
The Casco Bay Line pier that served the Ottawa House
The deep channel between Cushing and Peaks