A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Rising from the sea like a stone monster.

Most-visited and most-photographed slot canyon in the American Southwest.

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

The Twisted Trees of Alticane are an unnerving grove of Quaking Aspen, apparently mutated from a single source, giving them a twisted and unnatural appearance.

Bioluminescent firefly squid light up this Japanese fishing port.

Over 50 whirling pools left behind from the glacial age.

This abandoned fishing settlement may well be the greenest village in the world.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

Iran's colorful terraces are a rare geological masterpiece.

Over the dunes of the Empty Quarter, the mysterious music of the desert.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

Roman ruins top white travertine terraces formed by ancient hot springs.

An ocean in the making, in the Ethiopian desert.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A remote horde of architectural treasures fit for Indiana Jones.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Abandoned railway line circling the city of Paris.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Its front wall is striped with a menagerie of fantastic beasts and magnificent monsters.