The Dockville Music Festival in Hamburg it the host of some pretty high concept art installations, such as this subterranean tiny town. Another piece on display this year was this eerie army of radiation workers, who spent the festival forever frozen and glowing.
Here's the project manifesto from designers Luzinterruptus:
The installation Radioactive Control was created for the Dockville Festival [...] which tried to demonstrate, in a humorous tone, the paranoia that we are suffering from since the escape of radioactive material in Japan, has brought into question the safety systems at the nuclear power plants.
With our mysterious army of 100 illuminated radioactive figures, which advanced threateningly on the natural environment of the festival, we wanted to invite reflection regarding the use and abuse of nuclear energy, cheap in economic terms, but which can cause grave secondary effects for the environment and health, forever irreversible.