Visitors dip into a variety of pools of what was once ice.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The only castle in North America to ever house European sovereigns.

Monastery complex at the location where bodies of the executed Romanov royal family were discovered.

Longest canal tunnel in the world, abandoned in the 1960s.

Pluto is still considered a planet in Ithaca, New York.

Japanese national treasure originally built in 593 CE.

Large rock high in the mountains of Yunnan that is naturally shaped like a chair, complete with arms.

An art museum with an eclectic design and a scandalous past.

A 125-meter long "tribute to the Brazilian people."

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

Beautiful public park off the beaten path and away from tourists.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Delightful disarray of found objects and clutter.

The oldest continuously inhabited street in America.

A tunnel dug through the side of a mountain by hand provides convenient yet death-defying access to a small village in China.

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

A cliff-hanging restaurant.

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

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

One of the world's largest ancient burial mounds.

Living towers made of people that are now recognized by UNESCO.

18th century opera in its original splendor.