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.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

A lush indoor jungle fills this bustling Madrid transportation hub.

An eclectic collection of thousands of items owned by the sculptor Frederic Marès.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

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

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.

According to this bar, God gave an “11th commandment” to Antwerp: Thou shalt drink beer.

The legendary giant's severed hand sits on Antwerp's popular shopping street.