In this fountain the water is mercury — nowhere else in the world there is no such fountain! Its Creator, Alexander Calder, made for the government of the Spanish Republic. Instead of water in fountain flowing mercury in memory of the victims of the Spanish miners, who extracted it.
The first fountain showed in Paris in 1947 during the International exhibition. After that he moved to Barcelona. Then people still had no idea about the harmful effects of mercury on man and the fountain opened for all comers, now it can only be seen through a special glass, so that people were not poisoned with mercury vapors, and the most curious didn't touch her.