
The secrets of Swiss maps
From secret maps to sales bans and retouching, various methods have been used in Swiss cartography to protect military secrets.

A secret and an official cartography



Secrecy through omission during the Cold War


With or without a chalet?

Space and time
This article was originally published (in German and French) on the “Space and time” website of the Federal Office of Topography (swisstopo), where readers can regularly discover thrilling chapters from the history of Swiss cartography.