An underwater city for the dead.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The seamy, underground secrets of Portland's criminal past.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Odd outsider art installations surround a Gold Rush-era ghost town.

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.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

An abandoned early-20th-century boomtown sits within the Calico Rock city limits.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

The ghostly remains of what was once the world's richest copper mine.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

A nearly abandoned 19th-century town on the Palouse.

The century-old remains of an abandoned farm town in eastern Washington.

A lawless town deep in Death Valley was famous for its riches and death rate.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.