The land is home to swimming ponies and a legendary 18th-century treasure.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

The ancient tomb acts as a calendar that keeps perfect time.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The United States Capitol's former columns still stand.

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

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