A paradise hotel turned from opulent to overgrown.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

The world's brightest bioluminescent bay.

Send a postcard while vacationing with Satan.

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

Grand Cayman is home to a colorful sculpture garden filled with giant concrete animals.

This natural rock formation spouts jets of water into the air.

A massive maritime collision may have led to the myth of a resort island's strange financial status.

An epic sculpture depicting a wagon and straining oxen.

Where sweethearts leave their love locks in the Uruguayan capital.

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

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

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

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

This stone complex marks the urban center of a lost civilization.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

The Uros people live on floating reed islands in lake Titicaca.

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

A park that allows you to get up close and personal with one of the world's largest open volcanic craters.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.