Here's something called Seizure.

The blurb reads thus
British artist Roger Hiorns uses unusual materials to effect surprising transformations on found objects and urban situations. Fire emerges from storm drains, perfume permeates metal surfaces, and copper sulphate crystals colonise industrial objects.

SEIZURE was Hiorns’ most ambitious work to date and his first major sculptural project within an urban site, and it marked a radical shift in scale and context in his work. The artist encouraged the growth of an unexpected crystal form within a low-rise late-modernist development near the Elephant & Castle in south London.

It is interesting to note this has been listed for the Turner Prize, which makes a change from the usual wheelbarrow full of monkey fur and custard with a flag bearing Su Pollards' face sticking out the top.