JUST ACROSS from Mill Street and the river Thames is the West Oxford Democrats Club – it has no affiliation with any political party. Some wizard has revamped the web site very recently.
A PDF here has some information about the Island of Frogs, as the locals call it. The nearest bus stop is here.
If you look closely at the picture on its web page, there is a very famous bench, that was moved, obliquely, and reported on previously in the Oxford News. ♠