This massive blockhead sculpture hides an entire library.

A medieval military street hidden beneath a charming French fishing village.

This mountain trail inspired Nietzsche to complete his magnum opus.

A place to see how French aristocrats lived in the early 1900s.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This saucy statue once caused outrage among locals.

Eat the ultimate iteration of Portugal's most beloved pastry.

Drink the 'Blood of Christ' in this Roman Catholic fever dream.

This chimerical bridge/tunnel appears to dead end right into the sea.

Swedish skyscraper with a 90° twist.

The marker that allows students all over the world to be late for class.

A modern, secular take on a traditional Virgin Mary motif.

The indecision over what to place in this square was immortalized with a plaque.

These waste baskets play a few risque messages to discourage littering.

This millstone commemorates a gruesome tale that may have been the source of the city's name.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

These ancient rune stones plucked from the countryside now call this university park home.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

The final resting place of one of the brightest physicists of the 20th century.