Mercury Fountain

I was recently browsing YouTube to see if I could find any videos of artist, Alexander Calder, in action in his studio. What I found was something different entirely. Here is a video of a founatain Calder made for use with Mercury instead of water. It is housed at the Fundacio Joan Miro museum in Barcelona. Yet another reason to visit Spain!   

PS - Mercury is liquid at room temperature because of the pronounced relativistic effects on the outer shell electrons. Relativity at work... awesome.