In this site you can view continuously across the landscape of the river Danube, obtaining accurate latitude and longitude at any time of the path. Since it was a long-standing border of the Roman Empire, the most important function of the Danube never been to a trade route or transport, but the formation of a boundary function that remains valid today. This river, perhaps more than any other, not only connects but also separates. The crucial historical and symbolic value of the Danube acts as a starting point of reference for this photographic survey and mapping of intense effort displaying a natural cross section through Europe today. Works well on PC, mobile and tablet.