A three dimensial tile will cast shadows when light shines across it's face. This light can be switched power or the rays of the early or setting sun. The texture created adds such beauty to tile installation. Texture can also add safety and I was pleased to find some amazing porcelain tile that look like stone and had an amazing textured surface - making it a great choice I think for a shower floor or bathroom floor tile.
Take a look at this porcelain tile.