The one in Steinwiesplatz. It was built circa 1910, and it seems to have cost the whooping figure of CHF20.000 (about EUR16.000). Nowadays, it looks a bit out of place between buildings of more recent architecture and modern urban furniture. It is also famous for being in postcards sold in the picturesque old Zurich times section of second hand books.
Zurich 1200 Fountains 