This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.

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

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

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

The other side is actually green.

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

Abandoned bull fighting ring, slowly falling apart in Uruguay.

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

Recently revamped museum of Fijian history located within a gorgeous colonial-era garden.

A massive underwater sinkhole made famous by Jacques Cousteau.

Cavernous opening completely encased in Karst limestone.

A pre-Columbian ceremonial and astronomical site built by the Taino Indians.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

The Ayo Rock Formations stand out on the island of Aruba as a unique arrangement of giant boulders with interesting crawl spaces to explore.

The best place to send your postcards home from Antarctica.

One of the most spectacular canyons in the world.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Founded as a refugee camp, now a popular tourist spot.