Quito's historic, main square dates back to the 16th century.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Located outside Medellín, this Colombian park focuses on conservation and sustainability.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

A park with one large cat sculpture and 15 smaller ones, all painted by different Colombian artists.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

A dangling church built over a Colombian gorge.

Building this tragically pointless stone barrier cost the lives of the prisoners made to build it.

These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Notorious artist squat renovated into legal studios.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This architectural oddity is an oasis of green on the outskirts of Valencia.

This abandoned viewing platform has become a monument to unnecessary government spending.