Our harbor cruise brought us to George’s Island. It and the rest of the harbor islands are managed by both the state Department of Conservation and Recreation and the National Park Service. The jewel of the island (next to the views) is Fort Warren. It was built in 1850 and defended the harbor through four wars (Civil War, Spanish-American War, WWI and WWII). Part of it have been well maintained and can be viewed while others are off-limits due to safety concerns.