Sheffield had a water-fountain/sculpture thing...
If you stood far back enough and craned your neck up, it appeared to be two whale-tails sticking up into the sky.
Anyhow, being at the "budget shop" end of town, the water-fountain was generally covered by foot or so of bubbles, with an empty bottle of cheap shampoo floating somewhere underneath all the froth.
These days, it's been filled in and planted with various plants and bushes, which isn't quite as fun...