An autogrill D3
This autogrill on the motorway Milan-lakes has a symmetry of type D3, the same symmetry of a right pyramid with an equilateral triangle as a base. From the point of view of topology, if we consider only the central structure and imagine to "complete" the figure in a particular way, we can say that it is a surface of genus 4, that means a doughnut with 4 holes, or a sphere with four handles attached..
© matematita
The image belongs to the sections...:
Other prismal groups (Symmetry)
Buildings (Anthology of images)
Buildings (Symmetry)
Buildings and big size sculptures (Topology)
