Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

From Nunavut to Tierra del Fuego, you won't find any lighthouse higher than this one.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Huge stone depressions which may have acted as an Incan agricultural experiment.

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

It took 82 years and four different plaques to finally get the story right.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

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

Pivotal home of Nobel Prize winner Pablo Neruda.

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

The gorgeous murals at this open-air museum form the largest street art collective in Chile.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

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

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

This beautiful fountain was sculpted by a female artist who was ahead of her time.

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

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

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.