A Seattle oddities shop brimming with Victorian-era gems and antique curio.

Couple's personal collection of pinball machines turned public pinball museum.

A giant Troll lurks under one of Seattle's oldest bridges.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This Old West prison built into the side of a cliff was said to be inescapable.

The remains of this hell for leather wild west town can still be found in the Arizona desert.

The world's largest military aircraft cemetery.

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

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

The unusual burial monument of Arizona's first governor.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A hidden bar inside an ad agency has a deliberately misleading name, so employees can stay late under pretext of paperwork.

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

Nikola Tesla's former home contains an homage hidden from plain sight.

San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

Local legend says the remains of Father Christmas lie within the medieval grounds.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The largest medical and anatomical collection in France lies hidden from the public.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

France's most famous cemetery, with some of its most curious tombs.