A plaque at the lighthouse where Frederick Valentich made his last radio contact before he vanished without a trace.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

This tiny lake temple dedicated to a water goddess seems to float on the surface.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.