This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

Even Henry David Thoreau found this glacial pothole irresistible.

The New England cabin where an infamous British occultist conducted experiments in "magick".

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A 100-foot metal tower and swinging bridge that provides stunning views of mountains in five states.

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

Memorial stone for GWAR vocalist, depicted in his iconic costume.

This legendary city has been a tourist attraction for centuries.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

A stealthy Apache hideaway that became the haunting site of a mass grave.

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.