These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

Death rituals and sacrifice inside a Peruvian megalith.

Visitors to this public park will also find the ruins of an old western fort.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

This Scandinavian island is the site of the first modern observatory.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

The glowing blue Nymphaeum of Emperor Tiberius.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

The Uros people live on floating reed islands in lake Titicaca.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

See massive fossils that are over 200 million years old in northeastern Arizona.

The ghostly remains of an accidental sea.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A marvel of Byzantine engineering under the streets of Istanbul.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Ancient paintings known as the "Sistine Chapel of Cave Art."

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

A French library that makes sure its love of books is writ large... giant in fact.