Scariest Places on Earth

Visiting a haunted dormitory in Athens, Ohio; the Olson family spends a night in Chillingham Castle; entering a home in Villisca, Iowa, where an axe murderer killed eight people; exploring the site of an exorcism in Haydon Bridge, England.

A family stays in Philadelphia's Eastern State Penitentiary; visiting the Pine Barrens of New Jersey; exploring the Catacombs of Paris.

Visiting the Walls of Genoa in Italy; the New London Ledge Lighthouse in New London, Conn.; the Amargosa Opera House and Hotel in Death Valley, Calif.; a mental hospital in New England.

A young American explores a haunted Irish castle; an escaped mental patient known as the "Bunnyman"; a family agrees to spend a night at a haunted plantation.

Visiting Bran Castle in Romania.

Woodchester mansion in England.

The Menegaux family of Buffalo, N.Y., spends a night in Hunedoara Castle in Romania, where Vlad the Impaler reputedly trained as a ruthless warrior.

A Houston family spends the night exploring a voodoo-cursed plantation outside of New Orleans.

The Monahan family visits the home of Vlad the Impaler.