These are the ruins of England's first Augustinian monastery. Founded in 1103, the Priory of St Julian and St Bodolph is now hidden in the urban sprawl of modern-day Colchester but it's well worth seeking out. The dramatic ruins consist of a 12th Century nave and the West Front. Look out for the Roman bricks, which were salvaged from other parts of the town. The Priory is open all year and admission is free.