[rrobukef]

'Pictures of art' does not apply here. The marble texure is a natural, and unless special, brick walls or cracked glass are not artistic expressions. The mansion door could be art. However, at worst, the texture is a minimal part of an extremely artsy door and still fair use due to the transformative nature.

OTOH, every picture was made with the express intent to make artistic textures. Yes, it is copyrighted by the photographer and can be sold.