This Alamo Square mansion is rumored to have hosted satanic rituals and other occult practices.

An art supply shop holds the secrets of this quiet neighborhood's raucous Barbary Coast past.

In the basement of a San Francisco performing arts center, a small museum dedicated to the history of showgirls.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

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

Its buzzing collection honors vibrator history.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Turning night into day in Victorian-era Austin to thwart a serial killer.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

A tribute to the "toughest woman on the Texas frontier," who survived a famous battle and five husbands.

Continuing the tradition of the dime museum in style.

This unassuming North Austin neighborhood was built to test the novel idea of home air conditioning.

This grimly-titled Texas cemetery is all that remains of a Wild West settlement with possibly the worst name.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

In a New Jersey cemetery, the final resting place of two brothers who fell victim to a deadly mushroom.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

The site of one of history's most indelible and horrific tragedies.

Seven people are buried in the middle of what's now a movie theater parking lot.

A mixture of strange symbols, ciphers, words and cryptograms carved in 1876 remain unsolved to this day.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

One man's lifelong obsession with death.

A historic covered bridge is but one example of an oddly prevalent American urban legend.