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

This memorial to a family's dead son has survived a century of hurricanes and earthquakes.

This community-driven organization uses education and eco-friendly technology to protect the environment.

Enjoy the waters of this half-moon-shaped natural pool surrounded by breathtaking scenery.

La Cara del Indio honors the Taíno chief who fought bravely against the Spanish invasion of Puerto Rico.

An unnatural lake in a naturally beautiful setting.

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

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.

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

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

This small primate research island is teeming with playing, fighting wild monkeys.

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.

A walk through the historic city center, under the streets of Seattle.

Stepping inside this coffee shop is a journey through time.

An ice cream parlor chain that caters to vegans and pinball fans equally.

You can enjoy a (possibly haunted) stay at the medieval Norman castle that was once a favorite hunting lodge of King John.

Bonsai trees that are up to a thousand years old.

This century-old confectioner's outlet store was plucked right out of the Seattle World's Fair.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

"The House That Love Built" is shying away from "The House That Ghosts Love."