Scariest Places on Earth

A family voyages to Transylvania to spend a night in a 14th-century Romanian castle where Vlad the Impaler was reputedly trained as a ruthless warrior.

Hunting for ghosts in Goldfield, Nev.; the mummies of Mexico; the Hellfire Club; Hot Lake Resort.

A Los Angeles family hopes to succeed where another family failed -- to spend a night at an Irish castle built by a madman.

A sanatorium reputedly haunted by former patients; a lighthouse on Lake Michigan; an abandoned hotel and bathhouse; a Scottish castle.

The Hall family accepts the challenge to spend a night in an Italian monastery cursed by mad monks.

A California family explores an ancient castle with a long history of murder, cannibalism and ghostly activity.

A family from Los Angeles becomes the first people in more than 100 years to spend the night alone on a spooky Italian island.

Visiting Dalhousie Castle in Midlothian, Scotland.

A young American explores a haunted Irish castle; brutal events at a reformatory; paranormal activity at a Spanish mission; Italian mummies.

A Voodoo priestess seeks to cleanse evil from a Jamaican plantation; occultist Aleister Crowley founds the Abbey of Thelema in Sicily.

"Terror on Bunnyman's Bridge"; "Satan's Dormitory"; "The Jersey Devil"; "Blood Red Lighthouse."

A Missouri family returns to a haunted farmhouse; an investigator searches for the spirits of a killer and his victims.

The Olson family enter Chillingham Castle in Northumberland, home to dozens of restless spirits.

The Eaton family must spend the night rubbing elbows with the ghosts at a tumble-down plantation on the outskirts of New Orleans.

Visiting Oranmore Castle in Ireland.

"Cemetery of the Angry Undead"; "Poltergeist House"; "Hayden Bridge"; "Living With the Dead."

A Los Angeles family attempts to spend an entire night at a monastery haunted by excommunicated monks and the victims they tortured.

Visiting Italy and the lair of an evil genius known as the "wickedest man in the world"; paranormal activity at a Spanish mission; the tragic history of a ghost factory.

The Ulriches attempt to spend a night in Charleville Castle.

A family returns to a haunted farmhouse; the resting place of Edgar Allan Poe; the ghost of Mary, Queen of Scots, allegedly haunts the Old Bell Inn in Derby, England.

Two families spend the night in a haunted New Orleans plantation.

"Poltergeist House"; "White Witch of Rose Hall"; "Ohio's Prison of Lost Souls"; "Plantation Dare Part 3."

The Catacombs of Palermo in Italy; Fort Pulaski; the history of a voodoo-cursed plantation.

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

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.

Searching for ghosts in hotel.

Visiting a Moundsville, W.Va., prison; Dixmont State Hospital in Pennsylvania.

A family visits Cachtice Castle and encounters the infamous countess who tortured and murdered girls.

The Monahan family visits the home of Vlad the Impaler.

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

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.

Woodchester mansion in England.

Visiting Bran Castle in Romania.