A secret climbing tree hides along the side of a Costa Rican road.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

This abandoned hospital is one of the most haunted places in Costa Rica.

Sloth rehabilitation center in the jungle of Costa Rica.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Once the foundation for a mansion, these ruins now offer amazing panoramic coastal views.

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

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

A resilient tree that has survived for more than 700 years in Guánica Dry Forest.

Puerto Rico's once thriving oil company is now an abandoned wonderland of rusty steel.

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

Drift through underground caves on a tube.

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

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

An unnatural lake in a naturally beautiful setting.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.

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

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

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

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

The world's brightest bioluminescent bay.

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

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