Hidden Beach. Located in Puerto Vallarta, Mexico, this beach got its name from a water tunnel that provides the only access to it. Capped by a ring of red rock, this half-underground beach boasts sparkling waters that shimmer turquoise or green, depending on how the sun shines.
Plage de St. Jean. A celebrity magnet, this French Caribbean beach is an excellent choice if you like to mingle with the stars. Brilliant blue-green waters and shrub-covered hills meet at the shore.