More than 200 unconventional musical instruments that anyone can play.

Twelve natural mummies are displayed in the crypt of this former monastery school.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

The ruins of a once-grand mansion in Northern Ireland are now thought to be haunted.

An enormous natural sandstone bridge in Kentucky.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

A medieval weapon rumored to have been used by the brilliant poet himself.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

A 1920s speakeasy that had rum runners racing up and down the shores of California.

A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

Beneath a Virginia City bar is the entrance to an abandoned gold mine.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A jungle cave in Peru of unknown depths, otherworldly sounds, and strange nocturnal birds that navigate by echolocation.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.