Cherenkov Radiation (in my layman's understanding) is a blue light that appears when particles with an electric charge go through a medium faster than the speed of light in that medium.
I regularly listen to an Australian science podcast called Dr Karl with TripleJ FM.. Dr Karl has mentioned more than a couple of times that he went to see this effect at a lab in Australia, but has never made it clear whether he did this because he's in the science world, or as a regular Joe tourist.
I did a quick search but can't find anything online. Anyone know if there are tours, preferably in North America or Oceania, where you can see this?