More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Towering basalt columns, a creation of fire and ice.

A lawless town deep in Death Valley was famous for its riches and death rate.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.