This modern labyrinth lies in the shadow of a ruined medieval castle.

A submerged archeological park still holds the wonders of a Roman Sodom.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

Originally slated to become a luxurious resort, this structure is now a graffiti haunt reclaimed by nature.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

In northeastern Poland, the ruins of a massive granary overlook the Narew River.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

Each winter this underground cave forms a dazzling ice palace.

An abandoned church gets a second life as a massive beer hall and event space.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

Tell this pair of "love-inviting" cats in Ginza your romantic hopes.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This park is home to California's first oil boomtown, with structures that have stood for more than a century.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

Only open for two days a year, this church links ancient Greek and modern Christian celebrations.

A disconnected rotary phone for "calling" lost loved ones offered a unique way of dealing with grief in disaster-stricken Japan.

An eerie, derelict amusement park in Berlin.

This mysterious medieval grotto holds a grid of sacred wells of unknown purpose.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

This astronomical clock is the second oldest in England.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.