St Mary de Castro, Leicester - Credit: Wikimedia Commons
St Mary de Castro is an ancient, Grade I listed church in Leicester, England, located within the former bailey of Leicester Castle. Today it acts as a parish church in the Church of England's diocese of Leicester. "St Mary de Castro" is Latin for "St Mary of the Castle"; a name chosen to differentiate from nearby "St Mary de Pratis": "St. Mary of the Meadows". Read more on Wikipedia
Source: en.wikipedia.org