The short hike is worth the stunning views and crystal blue waters of a secluded beach.

The ruins of the first Spanish settlement in Puerto Rico.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

This nearly abandoned "company town" is a ghost of Puerto Rico's once-lucrative sugar industry.

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

Legend has it this historic port was a popular hideout and smuggling spot for pirates.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

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

An enchanting natural wonder in Puerto Rico's Camuy River Park.

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

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

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

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

The world's brightest bioluminescent bay.

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

The site of the earliest colonial settlement in the Bahamas started as a place of religious refuge.

A paradise hotel turned from opulent to overgrown.

These two giant boulders mysteriously perched on a 60-foot cliff may have been slung up there by a raging tsunami.

One man's love of sea life and art has turned his home into a temple of outsider island art.

Impressive sink holes fill this untouched old-growth forest in the Bahamas.

Bermuda triangle lighthouse, site of mysterious disappearances, left to crumble into the Atlantic.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

They squeal, they nosh, they look like predators.