The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

The oldest military monument in the United States.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Site where Moses may have received the Ten Commandments.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

One of the most exquisite Lycian hilltop citadels in Turkey.

Learn about the sweet, storied legacy of beekeeping in ancient Greece.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

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

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

This cairn marks the only place where Central European Time, Eastern European Time, and Further-eastern European Time meet.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

The little bear in the "funny kind of hat" has made his way from London back to Peru.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

An Inca spa, military outpost or maybe… both?

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Once home to Komodo dragons, this island dreamscape has a rare combination of white, pink, and black sand beaches.

A sprawling nature preserve harbors the world's only living dragons.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.