In its general appearance the building resembles French cathedrals of the time. It was erected between the 13C and the end of the 15C. The little St Mary's chapel and the ambulatory are typical of the High Gothic period. The nave has no triforium. No..

The treasure consists of a number of rare liturgical vestments and religious objects (12C-16C), together with a collection of tapestries (12C), including the Abraham tapestry, which is over 10m long.