While not the biggest or grandest Great Hall, Stokesay Castle's Great Hall is my favourite, and if ever I could have a great hall, this would be it. It is one of the best preserved late 13th century great halls in the world.
Deal Castle, UK is a 16th century coastal artillery fort built by Henry VIII. Deal Castle is built of Kentish ragstone brick, and Caen stone taken from nearby religious houses after the Dissolution of the Monasteries. Whether by design or coincidence, the fortress is shaped like a Tudor rose.
parergonal: Pevensey Castle Beginning in the 4th century as one of the last and strongest of the Roman ‘Saxon Shore’ forts, two-thirds of whose towered walls still stand. It was the landing place of William the Conqueror’s army in 1066.