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

This small fort played a huge role defending Puerto Rico’s capital city.

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

These red and black houses were awarded to the firefighters who saved their city from an enormous blaze.

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

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Years of neglect and nature took a toll on this 19th-century lighthouse.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

The world's second largest single-dish radio telescope, once used to contact E.T.

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