The boulevard Longchamp with its plane trees was created by an owners association. They let the city open the boulevard in the 1830s and then built apartment buildings for rent and private mansions.
This was an immediate success, and soon a quarter with a very homogenic architectural style developed. Here can be found the typical " three-window " building, a design often repeated in several quarters of Marseille.
The observatory, the oldest scientific establishement of Marseille, will soon...