The city of Sacred-Heart has a particular urban organization. At the center of the city, a huge composite building, Babylon, was erected on what used to be an emerald-colored hill in ancient times. Babylon was made up of a pile of constructions built progressively at different times of human history. Thus many different architectures coexist - baroque, industrial, gothic, neoclassical, etc. It spans over such an extended area that Babylon could be seen as a city of its own.