After a short ferry ride through Casco Bay to Peaks Island, and a little walking, you will find yourself looking at 'Battery Steele.' A U.S. Military Fort built during World War 2 and finished in 1942. It was built to protect Portland Harbor and Casco Bay from Kennebunk to Popham Beach.

It's been said that Battery Steele is not only the largest gun battery built on Peaks Island, but also an example of the largest battery ever built anywhere in the United States.

These days it's open to the public as you'll see in this video.