Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

Former WWI oil tanker played a variety of roles in history, its tantalizing rum-flavored scent being the only constant.

Neo-cave art on the macro scale.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

Castro's communist ice cream mothership has been serving five-scoop "salads" for over 50 years.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A glowing underwater cliff attracts marine life and divers in equal measure.

Send a postcard while vacationing with Satan.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Swim or sail to this pie-slinging boat off the coast of St. Thomas.

Dine on ceviche tacos in the sea at this floating restaurant only accessible by boat.

Divers can encounter an abandoned warship encircled by a giant kraken submerged in the British Virgin Islands.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

In Bermuda, this formal naval residence has become a go-to for cliff-jumpers and hikers.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

Where a rare geological phenomenon created a section of rock that resembles a checkerboard.

These two giant boulders mysteriously perched on a 60-foot cliff may have been slung up there by a raging tsunami.

A steamer run aground near Bimini lives a second life as a playground for scuba divers.

Bermuda triangle lighthouse, site of mysterious disappearances, left to crumble into the Atlantic.

Impressive sink holes fill this untouched old-growth forest in the Bahamas.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.