This document discusses a new 3D model of the city of Trondheim, Norway that was created to make urban planning and navigation easier. The 3D model includes detailed geographic information down to the 1 meter level, showing individual buildings, streets, and other infrastructure. It covers the entire municipality at different levels of granularity from 1 meter to 100km, integrating data that was previously dispersed across different agencies and datasets.

5. City
10km
No.
10m
Street
1km
zip
5km
Region
100km
Country
500km
Door
1m
… …… … … …

9. [Search and Navigation in Complex Overlapping Urban Spaces]

10. [http://trondheim2030.no/2015/11/09/ny-tredimensjonal-modell-av-trondheim-gjor-det-
enklere-a-planlegge-framtidas-by/]