A mermaid fountain was installed on Plaza Inmaculada on the south-west side of Madrid, featuring a contemplative mermaid with a lively tail.  ( map )

Sirena at Plaza Immaculada

The Mermaid statue at Plaza Inmaculada on the South-west side of Madrid, Spain

Mermaid fountains are fairly common, which is not surprising.  Other mermaid statues set in a fountain setting include

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