when was it expanded?
Between 1216 to 1227
Tower of London
In the 13th century, Kings Henry III (1216–1272) and Edward I (1272–1307) extended the castle, essentially creating it as it stands today. Henry was disconnected from his barons, and a mutual lack of understanding led to unrest and resentment towards his rule. As a result, he was eager to ensure the Tower of London was a formidable fortification; at the same time Henry was an aesthete and wished to make the castle a comfortable place to live. From 1216 to 1227 nearly £10,000 was spent on the Tower of London; in this period, only the work at Windsor Castle cost more (£15,000). Most of the work was focused on the palatial buildings of the innermost ward. The tradition of whitewashing the White Tower (from which it derives its name) began in 1240.
why do they have high security at the tower of london today UNANSWERABLE where is the tower of london located? Central London is it also referred to as the white tower? Yes why? It was the strongest structure in a medieval castle are there any rivers located in this place? Yes, River Thames which fish can you find in it? Salmon where does the river begin from? Gloucestershire and where does it end? It flows into the North Sea when was the tower built? In 1078 by whom? William the Conqueror has it been restored? Yes, it has when? After the Second World War how much did it cost to build? UNANSWERABLE
wiki:19616283
Tower of London [SEP] Expansion
The castle probably retained its form as established by 1100 until the reign of Richard I (1189–1199). The castle was extended under William Longchamp, King Richard's Lord Chancellor and the man in charge of England while he was on crusade. The Pipe Rolls record £2,881 1s 10d spent at the Tower of London between 3 December 1189 and 11 November 1190, from an estimated £7,000 spent by Richard on castle building in England. According to the contemporary chronicler Roger of Howden, Longchamp dug a moat around the castle and tried in vain to fill it from the Thames. Longchamp was also Constable of the Tower, and undertook its expansion while preparing for war with King Richard's younger brother, Prince John, who in Richard's absence arrived in England to try to seize power.