Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

The tallest stationary dunes on Earth also happen to sing.

An icy lake tucked among jaw-dropping alpine panoramas.

A little-visited waterfall in an otherworldly landscape.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

A gallery of underwater art that can be visited by man and fish alike.

A church dedicated to the Mexican skeleton saint.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Two small chapels housed inside an ancient tree.

A glacier pocked with ice caves and surrounded by rainforests.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

Mirrored floors and arched shelves create the illusion of an infinite tunnel of books.

The remains of what was, not so long ago, the world's largest city.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

Venice's island of the dead.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

Few other hotels can rival the grandeur of the Castle in the Rockies.

An underwater restaurant, surrounded by a coral reef.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The palace of the King of Kings, burned by Alexander the Great.

A South African bar inside a hollowed out 6,000-year-old Baobab.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.