Continuing on walls...
And ofcourse, the other option with walls is cladding them with stone or brick:
And even mud (traditional rural house building material becomes 'in' now!)
Other interesting wall installations found on http://www.2modern.com/
DIY - I guess the above effect can also be achieved with some ingenuity using plaster of paris (?) :-)
There are so many other wall finishes - wall decals, faux wall finishes, fabric coverings, wall mural art etc...shall cover all of above some time later