This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

A natural arch offers panoramic views of Yangshuo's karst hills.

A replica of the Statue of Liberty watches over the tomb of 72 Chinese revolutionaries.

A fantastic assortment of China's finest and most disturbing wares.

The home of the Dead Sea Scrolls is an abstract modernist dream.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

The remains of this ancient fortress atop a manmade hill look as though they were built into a volcano.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The topiary maze at the Habsburg hunting lodge.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Fortified medieval tower house with lovely roof garden.

Five candy-colored villages on the Italian Riviera.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

Building Men of War and Indiamen from Holland's Golden Age.

The attic of a four-century-old canal house hides a clandestine church.