The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

It's just another skyscraper, but it's shaped like '90s cell phone.

What was once a unique system of urban elevators is turning into a mechanical ruin.

The once highest point in China blends symbolic design with a kick of adrenaline.

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

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

The world's largest statue of Mao Zedong looks out over the city where he discovered Communism.

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

Taoism, Buddhist and Confucianism are all represented in this temple that claims to answer anyone's wishes.

Bangkok's men with dangerous jobs come here in search of protective talismans.

Single runway interrupted by a busy road that cuts across its middle.

The final resting place of the great navigator, or maybe his brother.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A unique seaside cave where Aleister Crowley faked his own death.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The corpse bride of Portugal.