Garden on Roof Tops

Diane Cook and Len Jenshel traveled across the world taking photographs of gardens and farmings on roof-tops. The Dailymail has published many of those photos here. It is so refreshing to know that it is mandatory in Switzerland and Germany to have garden on any flat roofs. With the dire state the environment of the world is in, all the countries of the world should pass such rules - to have gardens or solar panels on flat roofs.