 The cathedral is the northernmost cathedral in mainland Britain (Dornoch Cathedral is not actually a cathedral) and was the first new Protestant cathedral to be completed in Great Britain since the Reformation.Bishop Robert Eden decided that the Cathedral for the united Diocese of Moray, Ross and Caithness should be in Inverness.The foundation stone was laid by the Archbishop of Canterbury, Charles Longley, in 1866 and construction was complete by 1869, although a lack of funds precluded the building of the two giant spires of the original design.