Lewes Priory Great Gate is an early 13th century stone gatehouse, of the Cluniac Priory of St Pancras. Founded by William and Gundrada de Warenne in 1077, King Edward III granted the priory licence to crenellate in 1361. Dissolved in November 1538, the gate was partly dismantled in the 19th century, leaving only one small archway and two fragments of wall. Standing in the priory grounds is the Battle of Lewes Monument and to the east is The Mount. On high ground to the north is Lewes Castle.