Topographic Map of Switzerland

This article is about the historical map. For modern maps, see National Maps of Switzerland.
Bern as depicted on the Dufour Map

The Topographic Map of Switzerland (German: Topographische Karte der Schweiz), also known as the Dufour Map (German: Dufourkarte; French: Carte Dufour) is a 1:100 000 scale map series depicting Switzerland for the first time based on accurate geometric measurements. It is also the oldest official map series of Switzerland.