Some of the best secluded beaches in the U.S. have barely been touched by humans, yet they're surprisingly accessible—especially if you're willing to hike or take a boat to reach them.

Far from the throngs of beachgoers in Miami and Orlando, Port St. Joe, in the Florida Panhandle near ... beaches. At Tahiti Beach on Caprera in the La Maddalena archipelago, you can enjoy secluded ...