Historic Geodata

swisstopo’s map collection contains all first editions and revised versions of the official Dufour Map, Siegfried Map and National Map, together with their (often hand-drawn) graphic material. The catalogue of the map collection can be viewed online, and all sheets of the National Map are available in digital form.

The aerial photograph collection contains more than 600 000 images which should be preserved and made accessible to the general public. To achieve this aim, swisstopo will be digitalising all photographs over the next few years. This will help to minimise the repeated physical exposure of the original images, which speeds up the disintegration of analogue photographs due to natural deterioration. Furthermore, digital georeferenced aerial photographic data will enable every user to access information quickly and easily.