Since then the cathedral has undergone a number of renovations and some alterations: belfries were added in the latter half of the 17th century and in 1868 a sacristy was constructed at the cathedral's east end.
The cathedral has undergone a number of renovations. This was since then. The cathedral has undergone a number of some alterations. This was since then. Belfries were added in the latter half of the 17th century. A sacristy was constructed at the cathedral's east end. This was in 1868.