In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

This one-time health resort was used by aristocrats around the world.

Home to some of the world’s darkest skies, this project blends ancient Māori culture with world-class astro tourism.

Eat your Big Mac in a DC-3.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

A perfect turquoise lake colored with glacier dust.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This museum is dedicated to the most famous Irish writers in history.

One of Ireland's most infamous prisons for rebels including men, women and children.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

The most famous location in China was home to whole dynasties worth of imperial rulers.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

17th century palace once a meeting place for politicians.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.