Roger Hiorns - Seizure (2008)

British artist Roger Hiorns created something strangely beautiful and magical. For this awesome installation, Hiorns pumped 75,000 liters of liquid copper-sulfate into an empty public housing flat in London. After a few weeks the apartment looked like an ancient, glittering cave - the walls and ceilings were covered in blue copper sulphate crystals.

Photo by Nick Cobbing