Throughout history cities have been locations of human encounter. Equally they have been contexts for the trade of goods and services, for the evolution of various forms of urban space, and for the production, development, and enrichment of culture and technology. Many cities grew up along shorelines, which themselves constitute some of the globe's most important cultural boundaries. For above all else, it is water that has separated but also connected different communities, races, religions and nations, down through recorded time. With the rapid advance in technologies of communication,...