Uninhabited Islands
The Monkey Island is an archipelago of six islands on the Farmington River in Marshall inhabited by chimpanzees. The chimps were subjects of a hepatitis research for 30 years by a New York lab.
The research ended in 2005 and they were freed on the islands. While you won’t be able to land on the island, you can pay a fisherman to take you around in a canoe to catch a glimpse of the monkeys.