Glasgow Cathedral is the oldest cathedral on mainland Scotland, the present building being consecrated in 1197. It’s a large impressive stone building with very high ceilings next to the Necropolis.
The cathedral is dedicated to St Kentigern, or St Mungo, who was believed to have been buried on the site of the cathedral in 612.
I was most impressed by the various stained glass windows, some of the best I’ve ever seen.
I found it quite dark for taking photos and anyway was most interested in the stained glass, but you can see some of the detailing of the stonework in the photo below.
You can find more photos here.