Places arianalbear Wants to Go

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

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

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

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

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

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

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

The world's brightest bioluminescent bay.

This ''hidden'' 19th-century bridge played a simple, yet important role during the Spanish-American War.

This 20th-century mansion plays a key role in one of Puerto Rico's greatest novels.

An unnatural lake in a naturally beautiful setting.

This former railroad bridge was named after the great river that once flowed below it.

Invading U.S. troops were first seen from this now-abandoned tower, leading to the Spanish-American War.

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

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

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

Climb right into the heart of this colorful Iceland volcano.

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Walk in the footsteps of the gods and straddle two tectonic plates.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Iceland's largest lagoon is home to stunning multi-colored icebergs.