This photograph was taken at Amsterdam and represents a great connection between sustainability and living in big cities. Riding a bycicle in this city, which has almost no cars, was a experience of freedom, breathing a good fresh air, while it is also possible to sightsee wonderful views, buldings, architecture, and other local beauties. Less pollution, less noises and an opportunity of getting around and at the same time do exercise e keep fit with quality of living.