This elaborate hole in the ground was built as a sacred site for an ancient civilization.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This deceptively salty lake looks like blushing pink lemonade.

Alien rock formations grown from the sands of an Australian national park.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

Nature’s skyscraper launches out of the terrain with attitude.

This abandoned plantation was once witness to an eclipse that proved Einstein's theory of relativity.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

It houses the remains of a 17th-century version of the Titanic.

The university library shaped like a giant piece of Swiss cheese.

Florentine Renaissance style building in Switzerland, home to the world's largest taxidermy Great White Shark.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

Artworks by loners, prisoners and the criminally insane.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.