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Ramsar sites in Switzerland
Regions and cities, Environment
To protect wetlands, particularly because they are habitats for waterbirds and migratory birds, an international convention was signed in 1971 in Ramsar, Iran. Switzerland ratif...
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Declination Map of Switzerland 1:500000
Regions and cities, Environment
Geomagnetic maps are the result of measurements of total intensity, declination and inclination. The declination describes the angle formed between magnetic and geographic north...
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Siegfried Map
Regions and cities, Environment
The Topographische Atlas der Schweiz was published over the period from 1870 to 1926, initially under the leadership of Colonel Hermann Siegfried. This was the first complete de...