Corstorphine Hill is one of the hills of Edinburgh, Scotland, named for nearby Corstorphine. There are traditionally said to be seven hills in Edinburgh in reference to the Seven hills of Rome, but this figure is debatable, and as the city has expanded, even more so. It is a long ridge shaped hill, mostly forested (Corstorphine Woods) with broad leaves, and has extensive development on its south side, including Edinburgh Zoo. Much housing has been built on the lower slopes, and houses in other parts of the city have been built using stone quarried from Corstorphine Hill.