The only inland beach on this list, Secret Cove is pretty enough to bear comparison to any of the world's finest skinny-dipping spots. A back-to-nature setting of rocky shore, sparkling clear waters, and unspoiled pine forest with tanned bodies decorating the sand and smooth boulders, the cove is getting less and less secret these days thanks to its accessibility by car or boat. Situated on Lake Tahoe's northeast shoreline, this nudist haven is within reach of a number of other little bays, including Secret Creek Beach and Whale Beach, that are also suitable for bathing in the altogether.