Two historians have identified this goblet as the true holy grail, the chalice that Christ supposedly sipped from at the last supper.
In their book, Margarita Torres from León University and José Manuel Ortega del Rio, say that their three year study of parchments from Cairo's University of al-Azhar show that the upper part of this cup is the most prized object in Christianity.
The goblet of the Infanta Doña Urraca, daughter of Fernando I, King of León from 1037 to 1065, was originally given as a peace offering by the emir of a kingdom in this Muslim part of Spain.
Made of agate, gold and onyx encrusted with precious stones, this is kept at the San Isidoro basilica in León, housed in a small room. Because of the great interest, the curators are looking for a larger space to house it.
No wonder neither Harrison Ford nor the Nazis found the holy grail, they were looking in the wrong country!