In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The silly symbol for an underground protest group is now scattered around the city.

Relive a Polish uprising via an enormous, century-old cyclorama.

Museum dedicated to "the man who moved the Earth."

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

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

An epic sculpture depicting a wagon and straining oxen.

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

Abandoned bull fighting ring, slowly falling apart in Uruguay.

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

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

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

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

Mysterious and ancient carved standing stones.

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

This red lake 4,000 meters above sea level is home to rare flamingos.

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

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

A seemingly endless landscape of pure salt stretches far across Bolivia.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.