This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

You'll find the little birds tucked within the rocks of this Australian beach.

This Australian beach is composed of tiny shells.

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

Alien rock formations grown from the sands of an Australian national park.

One of the best beaches in the entire world.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

This extraordinary geological oddity resembles human-made pavement.

The only pollutant in the clear blue water is sunscreen.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The fairy tale castle of the "fairy-tale king."

In the Bahamas sits a lighthouse that is among the last of its kind.

A paradise hotel turned from opulent to overgrown.

A full-scale sculpture of a mermaid and baby grand piano hidden underwater by David Copperfield.

One of the most accessible undersea plane wrecks in the world.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

They squeal, they nosh, they look like predators.

One of the deepest blue holes in the world.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

The highest point of this Balearic island is home to a historic monastery.

The biggest depiction of Don Quixote's love interest in the whole world.

To fit bodies into this Renaissance crypt, they were first left to decompose in the crypt's rotting room.