A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

This singular art museum in São Paulo is unique inside and out.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

In La Paz's huge, city-sized cemetery, the deceased are stored in rows of apartment-like buildings.

Over a millennium ago, this site on the shores of Lake Titicaca was home to a city of more than 10,000 people.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

These spectacular ruins were built by Spanish padres in the 17th century.

Of the many Jesuit missions in South America, this complex is one of the best preserved.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

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

The largest stone moai on Rapa Nui.

The world's most remote airport.

A volcanic crater that visitors can look inside.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

Constructed on the ruins of a convent, this tower saved countless lives.

A bright little alley in La Boca is a part of tango history.

A tower devoted to — and modeled after — the Divine Comedy.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Stalinist skyscraper built with help of cryotechnology.

Gargantuan home of Russian science.

World's largest bell sits on the grounds of the Kremlin in Moscow.

The tallest hotel in Europe.