The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

The weathered grave of a medieval anchoress who walled herself up in a cell attached to a church.

This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

The video game-themed street art first popped up in the French city.

What looks like a normal building is really a hollow facade hiding a subway vent.

This bridge was constructed from the rubble of the infamous Bastille.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Catacombs turned marketplace.