Mercury fountain

Mercury fountains existed in some castles in Islamic Spain?

[citation needed] The most well-known modern example is a sculpture designed by the American artist Alexander Calder, commissioned by the Spanish Republican government for the 1937 World Exhibition in Paris.

The artwork is a memorial to the siege of Almadén by General Franco's troops; at the time, the region supplied 60 percent of the world's mercury.

[1] The fountain was a sculptural counterpart to Guernica, Pablo Picasso's protest against Spanish Civil War atrocities.

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