Early C12 nave originally seven bays, now two bays with a fragment of the third bay remaining as buttresses, with aisles and north vestry.
Nave has triforium and clerestory in Norman style with some internal distortion due to subsidence
the west wall is c.1652 with 1870 windows
Blocked south doorway to cloisters appears to have been C12.
South transept of similar Norman details, the south door is 1856 (here originally the dormitory range joined the Cathedral and roof line can be seen externally)
chapel has panelled and traceried wooden screens of late C15.
C15 choir stalls with later C15 mural painting on the backs.
Barrel-vaulted ceiling is painted with stars on a blue ground and coats-of-arms of local gentry East window contains medieval glass in tracery head, the lower glass having been removed in 1764, was replaced with the present plain glass in 1862.
I believe that this is the oldest window in Carlisle Cathedral.