This tiny stone building, which I’ve referred to, possibly mistakenly, as a mausoleum, was spotted as I drove past the churchyard. It’s a bleak and foreboding little place and has good access for photogrammetry.
I took 56 photos from my phone to generate a decent point cloud and then used Blender to “trace” the dimensions of the object in very simple geometry.
Then used the normals and diffuse from the photgrammetry model to get this low-poly version.