Base data and reference systems
Themes
![](https://backend-geo-admin-ch.imgix.net/2022/12/14/a1d4f8ac-1f2d-4f11-b282-bd32fe6ab05e.png?rect=0%2C19%2C588%2C331&w=1024&auto=format)
Coordinate reference systems
Systems for uniquely referencing spatial information in space as a set of coordinates (x, y, z) and/or latitude and longitude and height, based on a geodetic horizontal and vertical datum.
![](https://backend-geo-admin-ch.imgix.net/2022/12/16/65561065-ae81-4662-987f-9306b935ceda.png?rect=0%2C19%2C588%2C331&w=1024&auto=format)
Geographical names
Names of areas, regions, localities, cities, suburbs, towns or settlements, or any geographical or topographical feature of public or historical interest.
![](https://backend-geo-admin-ch.imgix.net/2022/12/16/104868a2-8e7d-43f8-95f6-52def2cd208b.png?rect=0%2C19%2C588%2C331&w=1024&auto=format)
Administrative units
Units of administration, dividing areas where Member States have and/or exercise jurisdictional rights, for local, regional and national governance, separated by administrative boundaries.
![](https://backend-geo-admin-ch.imgix.net/2022/12/16/178fd7c9-8c25-421b-abe4-69ab7a7b78fa.png?rect=0%2C19%2C588%2C331&w=1024&auto=format)
Addresses
Location of properties based on address identifiers, usually by road name, house number, postal code.
![](https://backend-geo-admin-ch.imgix.net/2022/12/16/aaf74105-76b0-465c-a59e-e7838d2fe6eb.png?rect=0%2C19%2C588%2C331&w=1024&auto=format)
Cadastral parcels
Areas defined by cadastral registers or equivalent.