This tiny home was originally a narrow alleyway.

This former sugarcane transport tunnel is now a portal to a lovely beach.

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

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

The world's brightest bioluminescent bay.

Archaeological sites and great food inside the island's largest mangrove forest.

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

This beachside town is home to a diverse nature reserve, multiple cays, and one of the three bioluminescent bays in Puerto Rico.

This replica medieval European village in the Dominican Republic was built by a Hollywood set designer.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.