The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

An accidentally hidden library containing the ephemeral history of New York.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Home of an evil witch famous within southern folklore.

The first full-scale tunnel built in America is short but scenic.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

One man's ambition created this psychedelic log home.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

Church and home-museum of a 1920s female revivalist preacher with a very sordid past.

"Prepare yourself! You are to become the voice of Interplanetary Parliament."

Australian museum dedicated to human health and lack thereof.