An old style Monastery/Cathedral Design,. I think it looks the best in Summer Fields texture pack (what the photos are in), but it was built with default so I know it still looks good with that. Very large building with multiple amenities including: an indoor rose garden/laboratory (think Mendleson), barracks, kitchen, forge, bell tower, dining hall, library, bath house, and of course the main Cathedral. Credit to the Magic Wands mod as it was very helpful.