Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

Peek through a transparent pyramid and drink in the mountain made of books.

Wind power station for making famous Ketel One vodka.

Its buzzing collection honors vibrator history.

An encyclopedic collection of mammal penises.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

During this Shetland Islands celebration, hundreds of torch-carrying "guizers" lead a procession to burn a viking longboat.

Somewhere there is a giant who can no longer poop, but now travelers can stay inside his anus.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A terrific purveyor of natural history objects and curios.

A fiery crater has been burning in the Karakum Desert since 1971.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

Where beer lovers can literally immerse themselves in beer.

Two monstrous faces loom over a village in Czechia.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

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

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Giant money stones of Yap.

An isolated dive site teeming with cnidarians.

One of the deepest indoor swimming pools in the world.

An exquisite tunnel of cascading flowers.

Lavish royal estate punctuated with heated greenhouses.