Ancient cave tombs known as the "houses of fairies."

Stalactites and stalagmites in a beautifully lit cave.

A striped 12th-century basilica sits in the countryside of Sardinia.

This weird, elephant-shaped rock also hosts two ancient tombs.

Mysterious tombstones thought to be remnants of Atlantis.

Crushed coral and crystals give the sand its signature coloration.

Windblown rock formations in an ancient Roman quarry.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Legend says those who drink from this trickle of water are destined to return to Montserrat.

George Martin's Caribbean recording studio now rots within the shadow of an active volcano.

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

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

The final resting place for Bermuda's British military, including a man who died of sunstroke.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

The world's smallest drawbridge.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

North America's oldest authentic African Village.

Once luxurious, these oceanfront beach homes have been left to succumb to the elements as the beach is slowly washed away.

4,000 monkeys used for medical testing on an island off of South Carolina.

The remains of a chapel created for convenience.

The Lowcountry color with the power to stop evil from entering a home.

This quaint museum in a long-running workshop is dedicated to a fixture in New Orleans lighting.