Eons ago, a rushing lava river formed this pristine passage through solid rock.

Famous for its bio-luminescent inhabitants, known as "dismalites."

Monument to the cotton-destroying boll weevil.

The 3.8 billion-year-old rock proves that tectonic plates may have been shifting longer than we thought.

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

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

The largest island on the great salt lake is home to curious creatures and strange stories.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

Where Nor'easters go to die.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This foolish Victorian sea fort was converted to a deluxe hotel.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

A petite white lighthouse perched on the ancient core of Stromboli Volcano.

This uninhabited volcanic island is the most remote in the world.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

America's smallest town is run by its single citizen/mayor/librarian/bartender.

Final resting place of Antarctic explorer Ernest Shackleton.

British Empire's last territorial expansion, claimed by four countries.

This one-time health resort was used by aristocrats around the world.

Abandoned outpost once home to a murderous tyrant.

Nuclear waste dump site now an environmental sanctuary.

The world's most remote airport.