One of United Kingdom's finest vestiges of medieval-age military architecture, the legendary Warwick Castle sits right in the heart of the Warwick Castle Knight's Village. The castle, William I's iconic stronghold that he built in 1068, encapsulates nearly 1000 years of history. Originally built as a motte-and-bailey castle, it was equipped with a stone keep in the 12th Century, during Henry I's rule. Its displays today include a host of medieval weaponry, vivid waxworks, and the Herculean 18-meter (59-foot) Warwick trebuchet, known as one of the largest siege engines of its kind in the world.