A naturally beautiful, seemingly bottomless deep blue spring.

Stone pillars and a petrified wedding party in the hills of North Macedonia.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A curious cave church carved into the face of a cliff.

Launch site for nuclear war against Western Europe.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

This disused church, left to the elements of the Arctic Circle's forests is open for exploration.

The last permanent exhibit dedicated to the Soviet leader.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Four alabaster giants contemplate the tides on the shore of Denmark.

A natural wonder in south Denmark.

The last fully functional fortress of Germany's World War II Atlantikwall.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

The remains of diamond fever taken over by the desert.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

Road signs in Namibia mark the location of one of the five major circles of latitude.

The last remaining site of Yoruba worship of the fertility goddess.

Africa's Venice on stilts.

Where thousands of slaves passed through the "Door of No Return."

These homes carved into the mountains seem to defy the laws of nature.