The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

These enigmatic columns tower over the ruins of an ancient Toltec city.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

One man’s passion for gas stations is on display along the Rio Grande in northern New Mexico.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

An island filled with hundreds of hanging, decomposing, decapitated dolls.