 It has attracted the Bundesamt für Strahlenschutz, solar industries, and research; the Greens have a stronghold there (the strongest in any major German city; up to 35% of the overall city vote, in some neighbourhoods reaching 40% or more in the 2012 national elections).The newly built neighbourhoods of Vauban and Rieselfeld were developed and built according to the idea of sustainability.The citizens of Freiburg are known in Germany for their love of cycling and recycling.