The bears of Bern have been a city highlight for over 500 years.

These spooky and unusual stone formations create an underworldly landscape.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

Caves famous for the dragon-slaying saint who lived there.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

The world's first electric battery-powered submarine.

This 47-story "M" needed 20 years to be completed

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

Two large posteriors in one giant statue.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

An ancient Egyptian temple in the middle of Madrid, Spain.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.