This paper is giving some notes on the town-planning of Mediolanum, that is, of the Roman Milano. In particular, we will discuss the orientation of the main street of the Roman town, the Decumanus. It is possible that the Decumanus of Mediolanum had been oriented along the major southern azimuth of moonrise.

Alongside Clem Tisdell’s prodigious scholarship, colleagues appreciate a quality he displays which characterises both economists and natural scientists. He sees the oddities in things – their incongruities, underside, gaps. Perusing the literature on regional and town planning, then, Professor Tisdell would notice articles with titles like the present one [1] and others suggesting uncertainty o...