From the foot of the monumental stairway of Palais Longchamp, this 19th-century mansion house cannot be missed. Nor can the unique art collection housed within...The private collections of wealthy Marseilles merchants Louis Grobet and Marie-Louise Labadie reveal an exquisite array of local artifacts ranging from 13th to 18th Century. Including sculptures, paintings, drawings, furniture, tapestries and a selection of earthenware, it altogether represents the richness and diversity of the region's artists.