Contemporary urban planning approaches creativity and innovation in two main ways. The "innovative milieu" view focuses on defined networks within regional economic systems. The "creative city" view sees cities as facilitating inventions through human encounters and cultural flows. A third emerging approach emphasizes specific places and their experience/appropriation. New cultural production sites in obsolete industrial areas are an issue, valuing the undesigned and coincidences that allow developing something new. Public space is key, defined by its public nature rather than just being space.