The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

A controversial memorial at the place where Captain Cook met his violent end.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

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

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

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

A tribute to Ponce de Leon's supposed quest for eternal youth.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

Home to the deepest rift anywhere on Earth.

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

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

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Legends surround this jagged rock formation in the New Mexico desert.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Pop culture has helped to keep this iconic British building from being destroyed.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

Famously misunderstood wonder of the ancient world

The most loyal of little dogs, or a Victorian era publicity stunt?