I remember when "A la pila" was a cry often heard in the dinning room. It usually signified it was someones birthday and there was about to be a forced bath in the fountain. The Pila has now been restored and you can see it in this picture.
Maria Perez in the early 70's and the Pila today
I know there are a ton of stories out there involving the famous "Pila". Send me yours :-)