York was a Viking capital in the 10th century, and continued as an important northern city in the 11th century. In 1068, on William the Conqueror's first northern expedition after the Norman Conquest, he built a num… See more

York Prison finally closed in 1929, and the Tudor Gothic Victorian prison buildings were demolished in 1935. The Assize Courts building now houses the York Crown Court, while the former Debtors' Prison and Female Pri… See more

• Brown, Reginald Allen (2004). Allen Brown's English Castles. Woodbridge, UK: Boydell Press. ISBN 978-1-84383-069-6.
• Butler, Lawrence (1997). Clifford's Tower and the Castles of York. London: English Heritage. … See more

• Renn, D. F. (1971) Clifford's Tower and the castles of York. London : Her Majesty's Stationery Office. ISBN 0-11-670409-8. See more

• English Heritage site for Clifford's Tower
• Gatehouse Gazette for York Castle
• York Castle Museum See more