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

In this 400-year-old hotel in Madrid, you'll find a comb in every room, an old clock, and maybe a ghost.

An automaton perched above an classic clock and watch store

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

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

A small but stubborn relic of Spain’s turbulent past hides in plain sight.

One of Madrid's most beloved statues is of an anonymous citizen.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

An abandoned airport in the middle of nowhere.

A pair of gigantic baby heads greet passengers at Atocha Station.

The world's most elegant power lines.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

Spain's largest bullring offers a unique glimpse at architecture and history.

The only subway station in the city that still makes use of gap fillers.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

An aptly-named street near the birthplace of the modern LGBT rights movement.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

The first piece of public art dedicated to LGBT rights.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.