Excellent stuff, Dennis! My favourite is the Llangelynin church; the undressed stone walls are wonderful (and I prefer it un-whitewashed). I'm almost ashamed to say I have ever put my foot on the ground in Wales, though I drove through it, to get to the ferry to Ireland.
Here are a couple from my own old stuff (and all from in or near my own city).
That's Kirkstall Abbey, on the western edge of Leeds. It was founded in 1152, and closed by Henry VII in 1539, so it's been a tourist attraction and source of free building stone for longer than it was an abbey. They repaired the side-aisles of the church a year or two ago, and they're roofed, though the nave isn't. I don't know which part of the abbey I was standing in to take this. It's pinhole, taken with my Century Graphic on Fuji Pro400H, for Pinhole Day 2013.
The Holy Ghost Zone, on Ashton Mount
This is a church of the Redeemed Christian Church of God, a Nigerian-based church, on my own grotty east side of Leeds. Now I'm not a christian myself, but I can't think spending time in that building would do anything for me. I don't know if it was built as a church, or converted from some other use. I took this on my walk into town for the Nelson Streetwalk
in 2010. It's HP5 in my Super Sport Dolly (scale-focus model with an f/2.9 Trioplan) developed in ID11.
Nettle, grass... oh, and a church
Cheating, I know; you can hardly see the church. That's St Mary's church in Lead, near Leeds (Lead itself is hardly there). The building is mediaeval, and has the graves of a crusader knight and his lady. It was built as a family chapel; the manor house it was probably built for is long gone, and the church stands in a small rough meadow. It is very close to the site of the Battle of Towton in 1461, one of the battles of the Wars of the Roses, and it is supposed that people may have come here to be shriven before the battle. The film is Adox CHS100, exposed in my Ensign Reflex with a six-inch Aldis lens, and developed in HC110.