Instead of hanging art on the wall, how about if the wall becomes the art?
This can work really well for certain situations.
For several years we have been using a product from ModularArts. This company designs panels to make a very unique statement to a room. The panels are made from (mostly) Gypsum on to fiberglass-based backer board. We have used both the Dune and the Glyph panels. They go in pretty easily however, making them look seamless takes a little more work. The dune panel took more work to install than the Glyph panel. Lighting is important to consider with this product.