This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Commonly acknowledged as the only public monument to the Devil himself.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A medieval abbey featured on 'Game of Thrones' that dates back to the 12th-century.

A boulder in the Churchyard of Down Cathedral marks the legendary burial place of "The Apostle of Ireland."

It's said this geological anomaly was caused when the Devil took a bite out of the Irish mountainside.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

A hugely vast Irish landscape of barren rock that stretches for miles.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Elevated freight railway turned wildly successful urban park.

The ancient tomb acts as a calendar that keeps perfect time.

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...