The Austrian Crown Jewels are the regalia and vestments worn by the Holy Roman Emperor, and later by the Emperor of Austria, during the coronation ceremony and other state functions. The term refers to the following objects: the crowns, sceptres, orbs, swords, rings, crosses, holy relics and royal robes, as well as several other objects connected with the ceremony. The collection dates from the 10th to the 19th centuries, and it reflects more than a thousand years of European history. It is kept in the Imperial Treasury at the Hofburg Palace in Vienna, Austria.