A natural swimming pool in the middle of the Carite Forest.

This colorful gate stands as an entrance to the walled city of Old San Juan.

An unnatural lake in a naturally beautiful setting.

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

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

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

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

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

This tiny home was originally a narrow alleyway.

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

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

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

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

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.

This stunning concert hall has become a symbol of Iceland's national recovery.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Strange rumors surround the artist who created these solemn metal guard dogs.

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

This one-time health resort was used by aristocrats around the world.

Hike, ski, or snowshoe to a backcountry yurt that serves up gourmet, four-course dinners.

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.