A Maori village obliterated by an 1886 volcanic eruption.

A glacier pocked with ice caves and surrounded by rainforests.

This strange geological landscape erupts with sudden bursts of water.

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

A perfect turquoise lake colored with glacier dust.

New Zealand's epic shrine to all things puzzling.

Italian cave with exceptional acoustics and an unsavory history.

Take a drunken tour inside the world's largest known geode.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

This unusual building straddles two countries.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Steam engines and conveyor belts are remnants of a genius system left in the middle of the Maine woods.

The beauty of urban decay, hiding some dark secrets.

The remains of a chapel created for convenience.

A sculptor's dream castle turned fantastical ruin.

A psychological self-portrait in the form of a giant, segmented head.

A historic covered bridge, only one of two remaining in North Carolina.

A clear blue swimming hole with hidden caves, still unexplored.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Home on the Hillside, and home of the first breakfast cereal.

A suspended garden, now gone, once hung in the middle of this abandoned church.

An abandoned relic of the city's failed experiment with below ground transit.