2000 years of history crammed into an eight acre site: Roman, Norman, Plantaganet and Victorian history.  The highlight is the guided tour of the main castle building and the rooms outlandishly refurbished by the Bute family in the mid 19th century within the main Plantaganet era shell and topped with a series of towers and spires.  The aim was to recreate a medieval gothic fantasy, and no expense was spared.  The result is a series of rooms layered in gold, wood, marble, and murals.  The tour lasts approximately 50 minutes, after which you can explore the Norman keep, visit the regimental museum in the former prison tower, and wander the grounds.