that had been sold were later returned to the Crown.) Detailed records of old regalia survived, and replacements were made for the coronation of Charles II in 1661 based on drawings from the time of Charles I. For the coronation of Charles II, gems were rented because the treasury could not afford to replace them. In 1669, the Jewel House was demolished and the Crown Jewels moved into Martin Tower (until 1841). They were displayed here for viewing by the paying public. This was exploited two years later when Colonel Thomas Blood attempted to steal them. Blood and his accomplices bound and gagged the Jewel House keeper. Although they laid their hands on the Imperial State Crown, Sceptre and Orb, they were foiled when the keeper's son turned up unexpectedly and raised the alarm. Since 1994, the Crown Jewels have been on display in the Jewel House in the Waterloo Block. Some of the pieces were once regularly used by Queen Elizabeth II. The display includes 23,578 gemstones, the 800-year-old Coronation Spoon, St Edward's Crown (traditionally placed on a monarch's head at the moment of crowning) and the Imperial State Crown. Royal Menagerie There is evidence that King John (1166–1216) first started keeping wild animals at the Tower. Records of 1210–1212 show payments to lion keepers. The Royal Menagerie is frequently referenced during the reign of Henry III. Holy Roman Emperor Frederick II presented Henry with three leopards, circa 1235, which were kept in the Tower. In 1252, the sheriffs were ordered to pay fourpence a day towards the upkeep of the King's polar bear, a gift from Haakon IV of Norway in the same year; the bear attracted a great deal of attention from Londoners when it went fishing in the Thames while tied to the land by a chain. In 1254 or 1255, Henry III received an African elephant from Louis IX of France depicted by Matthew Paris in his Chronica Majora. A wooden structure was built to house the elephant, 12.2 m (40 ft) long by 6.1 m (20 ft) wide. The animal died in 1258, possibly because it was given red wine, but also perhaps because of the cold climate of England. In 1288, Edward I added a lion and a lynx and appointed the first official Keeper of the animals. Edward III added other types of animals, two lions, a leopard and two wildcats. Under