Designers, planners, developers, and architects are trained to look beyond the boundaries of their project or site. The larger environment, history, culture, and economies shape the urban landscape whether for small sites, neighborhoods, districts, towns or cities. The metropolitan region is now the platform from which cities interact with the globe. As a result, every project must push beyond static jurisdictional boundaries or simple property lines to the regional context. Expanding the domain always leads to more sustainable and powerful schemes. It is essential for planning in the 21st century.