I know there is an a actual "Catherdral" - but from what I have read its certainly not what I have in mind. I am thinking in proportion - cold wet stone, some moss, very old wood, and some incense. I have and very much enjoy Craft by Adrea Maack which has to me a very moist stone scent to it, so something along those lines, but even colder and older, and with the wood and moss and incense.