This everlasting lightning storm may be the world's largest generator of ozone.

This island in Venezuela is known for its significance in early Spanish colonization and pearl trade.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

A violent name for a violent volcano.

Looking like nothing more than a cartoon deserted island, this tiny sandbar is home only to a single umbrella.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

This large stone off the coast of Martinique had a brief career in the Royal Navy.

This historic hiding place, often used by people escaping slavery, is a testament to a heroic struggle for freedom.

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

A flower grows on this giant stone that is said be able to control minds.

A series of magical limestone formations along the coastline of the country island of Antigua.

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

The sunken structure looks like the victim of a catastrophic flood.

The castle that provided the setting for much of 'Monty Python and the Holy Grail' is now a pilgrimage site for fans.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This ruined castle is said to be the legendary keep of a Viking princess.

This modest relic, with rich history as a strategic fort through multiple eras.

European castle ruins in an American state park are actually the product of death and grief.

Mysterious stone tower featured in many alternative histories of the New World.

This tower pays homage to a legendary Viking fort established in Massachusetts that never really existed.

Iceland's tribute to its thankless civil servants.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.