A neighborhood park in the city of Cáceres hides what some believe are revolutionary examples of Neanderthal cave art.

This former coal gasification plant found a curious second life as a popular public park.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

A giant milk bottle from the 1930s beckons drivers to this diner.

This beloved, centuries-old tree stands at the center of a small park dotted with archaeological artifacts.