Lost Relics of the Knights Templar sees treasure hunters Carl Cookson and Hamilton White embark on a global odyssey. Their objective: to trace the past of a hoard of artefacts which may have once belonged to the Templars. One of their destinations is Wewelsburg, the imposing German castle which served as the spiritual sanctum for Heinrich Himmler and the SS.

Today, the castle is a looming reminder of how so many members of the Third Reich were beguiled by ancient myths, old orders of chivalry, and the occult. We all know the pantomime villain Nazis of the Indiana Jones films, desperate to dig up the Ark of the Covenant and the Holy Grail. But the fact is, many real-life Nazis were just as obsessed as their cackling silver screen counterparts.

Himmler personally embarked on a failed mission to find the Holy Grail in 1940, visiting an abbey perched within the Montserrat mountain range in Catalonia. He was presumably led there by the belief that Montserrat was the real-life ‘Montsalvat’, location of the Grail in an Arthurian opera by Hitler’s favourite composer, Richard Wagner. This opera, Parsifal, was based on a medieval German poem called Parzival, written by a knight named Wolfram von Eschenbach. And this poem had already been an inspiration to another Grail hunter in the Nazi regime: Otto Rahn.

Rahn was a somewhat eccentric medievalist who believed there was a link between the story of Parzival and Catharism – a movement that flourished in medieval Europe, particularly in France. Condemned as heretics by the Catholic Church, the Cathars revived old Gnostic concepts that radically overturned traditional Christian thinking. They believed, for example, that the God of the New Testament and the God of the Old Testament were separate entities – the latter sinful, and the former good. Such ideas led to a crusade against the Cathars, and their wholesale slaughter.

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The Military Orders of the Crusades

A major Cathar stronghold was Montségur, a remote fortress in southwestern France. This became the site of a dramatic confrontation between the Cathars and French royal forces in 1243. Thousands of French troops besieged the fortress for nine long and gruelling months before the people inside eventually surrendered. Hundreds of Cathars were burnt alive in a bonfire after refusing to renounce their blasphemous beliefs. However, it’s believed that a number of Cathars managed to smuggle themselves out of the fortress, undetected, before their brethren surrendered.

It’s been speculated that these survivors of the siege took some kind of treasure with them. Gold, perhaps. Or maybe even the Holy Grail itself, brought back to Europe from the Holy Land, by the Templars or other Crusaders. Otto Rahn, prompted by previous occultists and mystics, identified Montségur with the ‘Montsalvat’ Grail castle of Parzival. His ideas appealed greatly to Himmler, and Rahn eventually joined the SS himself.

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The Amber Room: The world's greatest lost treasure

Carl Cookson and Hamilton White may not have a fabled holy relic in their hoard, but their quest may well bring new insights into the Templars and their religious treasure hunts in the Holy Land, which has fascinated everyone from eccentric occultists to high-ranking Nazis to serious historians today.