"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete."

Buckminster Fuller, philosopher, futurist and global thinker (1895 - 1983)

"If there are to be problems, may they come during my life-time so that I can resolve them and give my children the chance of a good life."

Kenyan proverb

"History teaches us that men and nations behave wisely once they have exhausted all other alternatives"

Abba Eban


Getting around

Cologne is well connected and you can go everywhere by tram/subway, bus, and the suburban railway. KVB is the local mobility company with many available lines and ticket options. The tram is the best way to get around the city besides walking. You can purchase tickets on the tram or at the stations, for all of Cologne simply select price category 1b on the ticket machine of the stop or in the KVB vehicle and pay with coins or card. A one-way ticket in a single zone will cost you 3 EUR, while a one-day Cologne pass gives you free transportation and costs 9 EUR (and also offers other benefits). 

Getting around from the airport

When you arrive by plane at Cologne airport you should take an “S-Bahn” (suburban railway) to go to the city centre. The airport has a train station “Köln / Bonn Flughafen”. The trains S13 and S19 connect the airport with the downtown area. Cologne’s Main Station is “Köln Hbf”. 


Benchmarking the performance of cities across energy, water and environment systems
related metrics presents an opportunity to trigger policy learning, action, and cooperation to bring cities closer to sustainable development.