The Crown Treasury situated in the historic Gothic rooms which were used from the 15th century on for storing the Polish coronation insignia and Crown Jewels, feature on display priceless objects from the former Treasury that survived plunder, among them the memorabilia of Polish monarchs including members of their families and eminent personages, like the hat and sword given to John III Sobieski by the pope after the Battle of Vienna, as well as the coronation sword Szczerbiec.