Heritage Open Day: St Andrew's is a Grade I listed 14th century church set in the Roman Forum of Isurium Brigantum. It is of exceptional heritage value and has a fascinating history St. Andrew’s, founded in the 14th century, is a Grade I listed church built on the site of the Roman forum of Isurium Brigantum and historically the mother church of a very large parish. In Roman times Isurium Brigantum was a major trading and administrative regional capital providing supplies north to Hadrian’s Wall. A statue of Mercury in the church indicates continuous worship on the site since pre-Christian times. The church is the third on its site and often described as ‘beautiful and peaceful’.