Neptune

Back in Zurich we went to the top of the Uetliberg, a large mountain that rises just outside the town. We walked along the Planetenweg (Planetary Way), an unusual footpath that includes a scale model of the solar system. The models and distances are to scale, so that when you leave the Sun you get to the first planets very quickly but it is a few kilometres before you reach the far orbit of Pluto.

The picture is of Neptune, and the extra is one of the views we encountered along the way.