The priory at Castle Acre contains one of the best preserved examples of a reredorter, or latrine, in England. (Note the use of ‘Rere Dorter’ on the sign. The official Ministry guide used ‘Rere-dorter’.) This two-storeyed structure was placed over the stream that ran along the edge of the monastic site.
The first floor was linked to the adjacent dorter (dormitory) by a bridge.