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

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

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

This small fort played a huge role defending Puerto Rico’s capital city.

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

The ruins of the first Spanish settlement in Puerto Rico.

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

An unnatural lake in a naturally beautiful setting.

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

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.

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

Once considered a marvel of engineering, there are now doubts about the structural integrity of this 5.4-mile cable-stayed bridge.

Shop the world's largest number of ice cream flavors, ranging from delightful to downright bizarre.

One of the most iconic sculptures in Caracas looks like a large orange ball suspended in the air.

This "floating island" plateau sits 7,671 feet above the forest floor.

Electrical pylon in the shape of Disney's beloved mouse.

A monument celebrating the idea of reaching inaccessible places.

A small poultry graveyard in the courtyard of a popular Key West watering hole.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

"We Seceded Where Others Failed."

Leave it to Key West to drop a real-live drag queen instead of a ball to mark the arrival of the New Year.