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Ludwig II of Bavaria, more commonly known by his nicknames the Swan King or the Dream King, is a legendary figure - the handsome boy-king, loved by his people, betrayed by his cabinet and found dead in tragic and mysterious circumstances. He spent his life in pursuit of the ideal of beauty, an ideal that found expression in three of the most extraordinary, ornate architectural schemes imaginable - the castle of Neuschwanstein and the palaces of Linderhof and Herrenchiemsee. Today, these three buildings are among Germany's biggest tourist attractions. Dan Cruickshank explores the rich aesthetic of Ludwig II - from the mock-medievalism of Neuschwanstein, the iconic fairytale castle that became the inspiration for the one in Walt Disney's Sleeping Beauty, to the rich Baroque splendour of Herrenchiemsee, Ludwig's answer to Versailles. Dan argues that Ludwig's castles are more than flamboyant kitsch and are, in fact, the key to unravelling the eternal enigma of Ludwig II.

Known as the setting of "Downton Abbey," Highclere Castle truly was the home of aristocrats and an army of servants, with a rich past to share.

André Le Notre is certainly the most famous French gardener. He was also a designer, architect, engineer, landscaper and urban planner. He worked for Louis XIV from 1645 to 1700 and designed the gardens of Versailles, Vaux le Vicomte, Chantilly and Fontainebleau, as well as the Tuileries in Paris.

I want to remain an eternal mystery to myself and the others ... The myth of King Ludwig II is unbroken even more than 125 years after his death. The 85-minute documentary, released in 2012 with beautiful aerial photographs, provides detailed information on the genesis and background of the royal palaces of Neuschwanstein, Linderhof, Herrenchiemsee and Hohenschwangau.

Explore the treasures and histories of eight of England's most splendid homes on your own private tour.

Based on the latest technological and scientific advances, this documentary explores the palace's architectural past to resurrect Louis XIV's vanished Versailles. Versailles was an ongoing building site at the time of Louis XIV and continued to be transformed by its successive occupants later on. The Versailles we know today only vaguely resembles the Versailles of the Sun King. Most of its original features and apartments no longer exist. Thanks to the digitisation of thousands of plans, a team of scientists takes us back in time to explore this forgotten past in a new way, through a large-scale reconstruction project to bring back the Versailles of Louis XIV as he designed it, according to his requirements and dreams.

A building lost in the midst of a 5 000 hectare park, that's the equivalent of the surface of Paris, Chambord is the castle of all superlatives. Having required nearly 220,000 tonnes of stone to build, the Chateau de Chambord, in the Loir-et-Cher department, is an architectural gem. 156 metres of facade, it has more than 70 staircases, 282 fireplaces and 426 rooms. The castle commissioned by Francis 1st in the 16th century is also the most mysterious. The majestic monument has its share of mysteries: identity of its architect, influence of the Florentine painter Leonardo da Vinci in its design, location in the middle of marshes in the heart of the forest and even longevity because it has survived through time without being damaged since the beginning of its construction in September 1519.

Spain, 1961. Life in the small village of Torrelobatón, in the province of Valladolid, was turned upside down when the cinematic magic circus of a future Hollywood blockbuster, produced by Samuel Bronston, the rogue mogul of his own film empire, came to town: its inhabitants became participants and witnesses of the shooting of “El Cid,” a film directed by Anthony Mann, starring mythical actors Charlton Heston and Sophia Loren. Those days, legends came alive.

An examination of occultism as practiced in different parts of the world.

Looks at the engineering of the Knights Templar, the religious order that marked the rise of the Middle Ages, and their amazing buildings in the west of Europe.