We visit an iconic German castle that was the site of a gruesome 17th century science experiment, tour the ancestral home of an English aristocrat struck down by an ancient curse, and inspect an isolated French fortress.

We tour England's iconic Tower of London; explore an impenetrable bastion in the South of France where a controversial literary giant was jailed; and visit an ancient German castle that may hold a centuries-old secret.

Visit a British manor house that inspired the creepy masterpiece, tour a sprawling New York mansion that belonged to a Gilded Age robber baron and explore a German castle that served as a prisoner-of-war camp in World War II.

We explore an English country estate that was at the heart of a bizarre inheritance dispute, tour a colonial mansion in Virginia to understand a grisly medical experiment, and visit the ruins of a Scottish castle.

We visit a giant fortress in Scotland where a 15th century power struggle climaxed, explore an Italian villa that housed a mysterious manuscript, and tour a upstate New York mansion

A Transylvanian castle provides the inspiration for an infamous literary villain; a French chateau incites a bitter rivalry between two powerful women; and a mythical monarch steps-into the real world at an English Abbey.

A commanding English palace is the setting for a royal tale of uncontrollable lust and limitless power, an ornate New York arsenal falls victim to a menacing curse and a advanced machine makes its debut at a Austrian palace.

n infamous pact with the Devil plays-out at an ominous castle in the Netherlands, a tactical Irish stronghold is at the center of a Pirate Queen's battle for supremacy and the construction of a French chateau wreaks disaster.

A haunting tale of jealousy plays out in an enchanting French castle, a act of treachery leads to bloody revenge at an Italian fort and an English castle provides the inspiration for one of the most legendary heroes of all time.

A secret chamber within a British manor saves a fugitive King from execution; a hilltop fortress is the launching ground for Joan of Arc's divine mission to save France; and a sex scandal ends at an idyllic New York estate.

A shocking scandal of regal proportions is recalled during a tour of an English mansion; and Northern Italy's Bardi Castle contains a heartbreaking tale of doomed love. Also: examining how the world changed after the assassination of Archduke Franz Ferdinand of Austria.

In this episode, a mountaintop abbey in France is the setting of an audacious robbery. A shocking tale of marital double-dealing unfolds at a English estate. And the owner of an opulent Kansas mansion concocts a wonder drug.

In this episode, a German castle provides unlikely refuge for one of Christianity's most iconic figures. A British estate is the site of a bewitching tale. And a secret romance that threatened the monarchy envelops the owner of a French chateau.

A French chateau plays host to one of the most beloved and well-known romances ever told; a Scottish castle is the setting for a scientist's experiment; and a desperate manhunt leads to a close encounter at a Southern mansion.

An Irish manor is ransacked in one of the largest art heists the world has ever seen; a French chateau plays host to the illicit affair of a literary superstar; and a hill-top German castle is central to a tale of fraud.

A chateau in Southwestern France is home to an ailing boy who seeks artistic acceptance; a Canadian castle serves as a secret location for a wartime project; and a Scottish stronghold is at the heart of a fabled love story.

A beautiful French castle launches the career of a fearless aviator, an opulent English retreat is home to a provocative royal matchmaker and a secluded Colorado estate is at the center of a brutal kidnapping.

Epic tales from castles around the world are unveiled, including the conspiracy in Paris that brought down the Knights Templar and a wizard's curse upon the Fyvie Castle in Scotland.

The dramatic origins of the Christmas carol, go back to a citadel in Prague; within an opulent Parisian palace, a doomed painter uses art for salvation; and a jealous butler learns a dangerous secret at an idyllic English estate.

The origins of the Brothers Grimm's fairy tales are found in a German palace; within a Floridian fort, an imprisoned doctor battles a deadly virus; an antiques dealer traces a mummified head to a King born at a French chateau.

William Wallace's demise is traced back to a fortress in England; at a chateau in the Czech Republic, the legendary Casanova suffers from a broken heart; in the shadow of a Danish stronghold, an astronomer meets an untimely end.

Bonnie Prince Charlie, leader of the Jacobite Uprising, escapes imprisonment in Dunstaffnage Castle in Oban, Scotland, and flees the country, disguised him as a maid-servant, with help from his supporter Flora MacDonald. After being in debt by building fairy tale castles, the eccentric King Ludwig II is forced out of his beloved Neuschwanstein Castle in Schwangau, Germany

A valuable diamond is stolen from a remote French chateau, a monstrous Italian fortress is home to a twisted tyrant and an English manor reveals a harrowing case of the occult that isn't what it seems.

"The Wolf of Badenoch", the nickname given to medieval Scottish nobleman, Alexander Stewart, whose terrible reign of pillage and slaughter leads to a legend that he played chess with the Devil for his soul in Ruthven Barracks - presented by Dr Leo Ruickbie.

An aging singer gives the performance of a lifetime at a Spanish citadel, an ominous Italian castle conceals the murderous plot of a lonely countess and a charming English estate was the scene of a scintillating literary hoax.

A pair of lovers imprisoned at an English fortress go on to transform Australia, a Portugese palace is the site of forbidden romance and murder, and a trailblazing invention gets its name from a stately American mansion.

The victims of a crazed witch hunt are imprisoned at an English castle, a sprawling palace is home to two royals who helped form modern-day Spain and two schemers plot the murder of a millionaire living in a Texas mansion.