Roof gardens represent the "highest level" of garden design. They are lofty lifestyle oases - modern, rural, romantic or classic - that show nature and architecture in perfect harmony. In this book, renowned architects and garden designers present exclusive roof garden ideas with contemporary materials, trendy furniture, tried and tested plants and modern light installations, from all five continents. Architect Friedensreich Hundertwasser's theory that "anything that is horizontal under the open sky belongs to nature. Roads and roofs should be tree-covered." is put into practice in a contemporary way.