A shower wall gets to be the more decorative half of a wet room, since the floor beneath it is doing the harder work of keeping you safe underfoot. Large format porcelain across the main walls gives a calm, spa-like feel with barely any grout to break it up, while gloss and polished finishes make the whole space feel more open and reflective, especially useful in a smaller shower enclosure.
For more character, zellige, metro and mosaic tiles are popular choices, often used inside a shower niche or on one wall as a feature against a plainer tile elsewhere. All of these are chosen for how well they cope with constant moisture as much as how they look, from sleek and minimal to something with a bit more boutique personality. If you are also tiling the shower floor, take a look at our dedicated wet room floor collection for the slip-rated options that job needs.