Adams Key lies on the north side of swift-moving Caesar Creek. Once home to the famed Cocolobo Club, a retreat for people like Carl Fisher, Gar Wood and Presidents Harding, Hoover, Johnson and Nixon, Adams Key is now a day-use area open from dawn until dusk. A short trail leads through the hardwood hammock. A picnic pavilion and toilets are also available. Two park ranger families live on the island.