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

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

The only diamond mine in the world where you can keep what you find.

The loneliest island in New York.

The longest continuous lava tube in Oregon.

A walkable map of the world, made from soil and stone by one man.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

The Magical World of George Phar Legler.

These aggressively sustainable art homes look like something out of 1970's science fiction.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

A long abandoned hospital building on the outskirts of NYC.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

An underground city of salt.

Moss and stone turn this waterfall into an otherworldly liquid veil.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

Living trees form the structure of an open-air palace.

A striking 12th-century-style castle built on the edge of a cliff.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Railroad came. People came. Railroad left. Town died.