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

A fascinating little museum all about the rich history of Peru’s famous plant.

Did Inca children also slide down these smooth rocky slopes above Cusco?

This archeological site hidden behind Teotihuacán's pyramids shelters 1600-year-old murals.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The oldest stone house in Paris was built by its most famous alchemist.

France's most famous cemetery, with some of its most curious tombs.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Iconic red and white plaques show the creative names invented to navigate the city streets.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This quirky piece of naval artillery has been deafening Canadians for over a century.

What happens when a sculptor has to find a way around a 100-year-old copyright.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Every equinox this Maya pyramid puts on a spooky ancient light show.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

At least seven hues of blue and turquoise make this freshwater lagoon unique.