Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The site of Paul Revere's historic two lantern warning.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A beautiful Victorian-era cemetery, complete with a miniature village.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

World-famous, Pink's still manages to keep its prized cult fetish status.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

Medical and zoological curiosities for sale.

World's largest collection of serial killer artwork and other macabre exhibits.

This open-air museum was originally a World War II testing ground for German missiles and rockets.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Museum dedicated to "the man who moved the Earth."

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

An abandoned Nazi explosives plant founded by the inventor of dynamite is now an underground museum.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Warsaw's fantastically preserved gasworks...almost.