Green Infrastructure
Renewable Energy
Walkability
The region has lots of sun, allowing strong vegetative growth.
Freiburg has a lack of extractable resources, so no scarring of the landscape occurred from the extraction of natural resources.
The city was built so that it does not interrupt the airflow from the Black Forest.
After the city was bombed in World War 2, plans were made with environmental consideration in mind including reconstruction, land use, and transportation.