 The Paris Rive Gauche project is an example of more traditional urbanism based on the alignment of mid-rise buildings in concert with the existing street layout.While urbanism of the 1960s and 1970s was based on the idea of returning to the past, today's urbanism is based on the idea of promoting Paris' heritage.This philosophy is less common in Paris's inner suburbs, where large-scale projects, mostly business developments, have multiplied since the 1990s.