bathroom walls made of Pandomo, tiles by Mosa.
What Houzz contributors are saying:
If you can’t eliminate grout lines entirely, then at least reduce the number and thickness. Large-format porcelain tiles come in sizes all the way up to 24 inches by 48 inches (120 by 240 centimetres). I had a little fun with the math. If you use a single 24-inch-by-48-inch tile instead of 4-inch-by-4-inch (10-centimetres-by-10-centimetres) tiles covering the same area, you eliminate 42 feet (12.8 metres) of grout lines!