A striking depiction of Teotihuacan's mysterious "Spider Woman."

This pre-Hispanic apartment complex also includes ancestral paintings that point to its military past.

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

Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

A beautiful but toxic fountain of mercury.

This giant Cold War satellite dish has become a symbol of Trinidad's need for sovereignty.

Built for the 1962 World Cup, this fully functioning botanical clock is still ticking.

Pivotal home of Nobel Prize winner Pablo Neruda.

What was once a unique system of urban elevators is turning into a mechanical ruin.

The “City of Stairs” sits high in the Andes, above the world’s largest underground copper mine.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

Mountain where Jesus was first tempted by the Devil.

This semi-secret storybook hedge maze is also the oldest garden in the city.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This cemetery features modernist statues as strange as its name.

Week-long block party becomes a competition for the best decorated street.

An open-air "garden" of mural art that changes weekly.

Turntable anonymously received orphans, alms, and groceries.

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

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.