swissBOUNDARIES3D is an open dataset that contains all national, cantonal, district, and municipal boundaries of Switzerland.

I converted it to RFC 7946 GeoJSON and made it available at rzoller.ch/swissBOUNDARIES3D.

This makes it usable with a variety of tools, e.g. you can show the national boundaries of Switzerland and Liechtenstein on geojson.io:

swissBOUNDARIES3D on geojson.io

More applications hopefully coming soon…

You can find the conversion code on GitHub.