Special building in Lyon, Viennois Duchy?

[(Rúna)]

I hadn't noticed it previously but I see there is a special building slot the Lyon county, the capital of the duchy Viennois (Below Burgundy).

I've tried looking at the CK3 wiki pages for duchies and special buildings, no info is there.

It is not on the CK3 special building map.

I clicked through the Christian religions in games to see if any heretical cults had a holy site there (eg; Cathars), but none seem to have one.

I'm stumped, and there seems to be a lack of info online when searching through forums/

Anyone know?

[Andrej27]

Christian faith Adoptionism has a holy site there.
Seems that it was added in Fate of Iberia Flavor Pack.
There is an event chain that can lead to you convetiong to it, and manual conversion is globally blocked till someone does so via the event.

[(Rúna)]

Thank you Andrej27!

For some reason I must have missed that when looking through the faiths and holy sites in-game. Hopefully I get the event, as I'm just starting a playthrough in the county :)

Originally posted by Andrej27:

Christian faith Adoptionism has a holy site there.
Seems that it was added in Fate of Iberia Flavor Pack.
There is an event chain that can lead to you convetiong to it, and manual conversion is globally blocked till someone does so via the event.

[Azoniar]

Originally posted by Andrej27:

Christian faith Adoptionism has a holy site there.
Seems that it was added in Fate of Iberia Flavor Pack.
There is an event chain that can lead to you convetiong to it, and manual conversion is globally blocked till someone does so via the event.

Lol Ive been doing a Adoptionist playthrough but I didnt realize it worked like that XD, I saw a new religion and its holy sites and converted to, now I know why there was a random blob of that faith in the middle of Hungary.