Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

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

This enormous censer uses a pulley system installed over 400 years ago.

The ruins of the second-largest circus school in the world.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

Sweden's oldest animated sign is still lighting up the skyline today.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

One of the best examples of the modernist movement in Madrid.

The Spanish king's private bathroom embraced the idea of a porcelain throne.

The remains of this misplaced church were moved here stone by stone.

The unfinished final resting place of some of Spain's most prominent politicians.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

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

Five million people are laid to rest here, more than the population of Madrid itself.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

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

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

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