It is also one of the largest collections of arms and armour in the world, comprising the UK's National Collection of Arms and Armour, National Artillery Collection, and National Firearms Collection. Its historic base is in the Tower of London, but today the collection is split across three sites:From 2004 to 2015, a limited selection of items was also on display in Louisville, Kentucky, in the United States, in cooperation with the Frazier History Museum.HistoryThe Royal Armouries is one of the ancient institutions of the Tower of London and was originally engaged in the manufacture of armour for the Kings of England. The Office of the Armoury grew out of the department known as the King's Privy Wardrobe at the Tower of London in the mid-15th century. Overseen from 1423 by the Master of the King's Armour, and based in the White Tower, the Office was responsible for manufacturing armour and edged weapons for the monarch and his armies; it functioned alongside the Office of Ordnance, which had responsibility for firearms.
