<p>Working with urban water presents one of the most fundamental and rewarding challenges in our cities today.</p><p>After realizing Asia is heavily in need of flood protection and improvement of water quality and urban quality, we feel delighted to present our ideas for those issues in this book. After the three editions of Waterscapes, we made a conscious decision to publish our most current work now in an English/Chinese bilingual version for Asia. As the urbanisation process has reached an enormous speed, the consideration of clean water, blue sky and quality of life for people in dense cities has reached utmost importance. This has to be seen also in the light of a harsh competition between cities and their abilities to attract investment and talent.</p>