Covering some 80 square kilometres, Frankfurt am Main's green belt area (the so-called GrünGürtel) forms the city's most important local recreation area – for relaxing, unwinding and taking a breather. It is available to all of the city's inhabitants and guests alike at all times absolutely free, right on the doorstep.
The introduction of a low emission zone in Frankfurt am Main and lorry bans to combat fine particulate matter in the inner city in addition to the promotion of cycling as a mode of transport all constitute measures undertaken to enhance the air quality in Frankfurt and thus make a sustainable contribution to enhancing the quality of life in the city.
Whilst ecological aspects were already taken into consideration during the planning of some of the bank towers, others were retrofitted. The Commerzbank tower is ventilated as much as possible by a natural system for instance, with gardens located at heights of up to 144 m. Combined heat and power (CHP) plants in areas of new development, school buildings to passive house standards and the use of biogas in composting facilities are just a few outcomes of implementation of the environmental policy guidelines developed by the city.
These guidelines represent a political declaration of intent by the municipal authorities and city council for sustainable city development. They follow the understanding that Frankfurt am Main can only confirm its significance as a national and international business location in the long term if the natural surrounds are preserved, the environment and living quality enhanced, and the companies based here use the natural resources as efficiently as possible.