I was the artist responsible for the creation of the exterior gothic architecture set. I modeled and textured nearly 300 assets including everything you see here and the majority of the variants of these assets. See here for additional information about the workflow I used:
https://www.artstation.com/artwork/WXnwzG
Some additional model support by Josh Stubbles, Daryl Brownstone and Liza Zhukova. This set is based off concept art by Andy K Lee and Jordan Kratochvil
https://www.artstation.com/andyleeart12
https://www.artstation.com/jordan_kratochvil
You can see some of these assets in this Nighthaven launch trailer