The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The final resting place for the remains of 143 Habsburg royalty.

Baroque celebration of the end of the Great Plague of Vienna.

A silly medieval mural preserved on the side of a Viennese house.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

Providing the soundtrack to the golden years of the Seattle grunge scene.

The remains of the worst maritime disaster in the history of the "Graveyard of the Pacific."

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

The Pope’s secret escape route.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This basilica is dedicated to two saints, one of which is known more for his famous quote.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This curious, round temple is the oldest still-standing marble building in Rome.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This ancient market is often referred to as the oldest shopping mall in the world.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.