Excited historians believe they have traced a fragment of the cross on which Jesus died to a church in Rome. Is it the real deal? Find out today.

FA Mitchell-Hedges and daughter Anna claimed to have found a crystal skull in the 1940s. Did it really have predictive powers? Hear the truth today.

Ron Wyatt believed the Ark of the Covenant lay beneath a holy site in Israel, where digging was forbidden - not that it stopped him. Hear what he found.

Hear how Heinrich Himmler was set on obtaining the Annals, a book written by Roman historian Tacitus that apparently hinted at a German 'master race'.

Edwardian explorer Percy Fawcett launched several expeditions into the uncharted Amazon, looking for the fabled city of El Dorado. Hear what he discovered.

The Book of Thoth was said to have been penned by the Egyptian god himself. Is there any truth behind the legend? We investigate the myth.

Heinrich Himmler, head of the Nazi SS, enlisted veteran Otto Skorzeny to help him find the elusive Aryan Holy Grail. Did they have any success? Find out.

Now worth millions of pounds, the Honjo Masamune is considered to be the greatest Japanese sword ever made. But where did it disappear to after WWII?

Investigating the legend of King Solomon's mine, which apparently contained gold from the mystical land of Ophir. How close are we to finding it?

Many treasure-hunters have tried to locate the loot of prolific pirate William Kidd, who was executed for his crimes in 1699. Will it ever be found?

In 1941, Germany looted the USSR's Amber Room, deemed by many to be the eighth wonder of the world. Its fate was a mystery - can it be found?

Creationist J Randall Price led an expedition to find Noah's Ark in 2009, using clues from the Bible. Discover the fruits of this remarkable quest.

Adolf Hitler coveted the Holy Lance - the spear used to pierce Jesus's side - and traced it to Vienna. Was it real or a copy? Find out here.