Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

In 1952, a strange encounter in the woods of West Virginia led to the legend of a 10-foot-tall monster with glowing eyes and a distinctive style.

Images chiseled into the basalt here date back an estimated 300 years.

Formerly a lovely white sand beach this Hawaiian stretch is now a trap for countless tons of trash.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

People escaping slavery may have hidden inside a corpse vault.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The site of the climactic scene from the classic horror film is now a historic landmark.

This abandoned mine offers a glimpse at what life was like for those who came to Alaska seeking Gold Rush riches.