Some things they are known for:
-France's largest commercial port
-Largest French city on the Mediterranean coast
-major center of art and history
-created the stirring national anthem of France, La Marseillaise during the French Revolution
-food and restaurants-bouillabaisse, a fish stew which originated in Marseille
-Mediterranean climate- mild, humid winters and hot, dry summers
-France's oldest city
-Important in the arts: birth place and home of many French writers and poets, including Victor Gélu, Valère Bernard, Pierre Bertas, Edmond Rostand and André Roussin
-The Alcazar, until the 1960s was a well known music-hall and variety theater
-Marseille has been designated as European Capital of Culture in 2013
-Marseille's main cultural attraction was, since its creation at the end of the 18th century and until the late 1970s, the Opéra
-a regional centre for culture and entertainment with an important opera house, historical and maritime museums, five art galleries and numerous cinemas, clubs, bars and restaurants
-Large number of theatres, including la Criée, le Gymnase and the Théâtre Toursky
-An extensive arts centre in La Friche, a former match factory behind the St-Charles station
-Well known in France for hip hop music bands like IAM, Fonky Family, 3ème Oeil, and Psy4 de la rime.
-Marseille has been the setting for many films, produced mostly in France or Hollywood.
-old port, array of fortresses, nearby islands, impressive churches and marinas, and museums
Hope this helps!