This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A formerly derelict railway workshop is home to a new world-class contemporary art museum in Central Mexico.

A tiny chapel perched along a 14th-century bridge.

Mexico City's largest market contains a Willy Wonka-esque wonderland.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

This building has a giant piercing through one of its corners.

Once the tallest building in Detroit, this Gothic church houses some of the oldest stained-glass windows in the country.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

These free-roaming horses were once destined to disappear from the land.

This ever-changing arrangement of naked dolls even caught the attention of "The Walking Dead" crew.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.