It is now the parish church of Wymondham, but it started life as a Benedictine priory.
It was founded in 1107 by William d'Albini, Chief Butler to King Henry I as a dependency of the Benedictine monastery at St Albans, but became an Abbey in its own right in 1448.
It is dedicated to the Virgin Mary and Saint Thomas Becket. A narrative icon panel, made from wood, is on display in the church and tells the story of Thomas' life in pictures.
When it was built, stone from Caen in Normandy was shipped specially across the English channel.
One of the abbots was Thomas Walsingham.