Laundry day?

No!  This is 59 Rivoli, which is billed as the "cultural alternative in the heart of Paris."  There are 30 artists in studios throughout all 6 floors of 59 Rivoli plus the Galerie 59 on the rez-de-chaussée (ground floor).

  Originally, it was a squat started by artists looking for a place to work, live and show.  Now it is legalized and open to the public every day except Mondays.  Not only can you see the artists' work but visit the ateliers where the creations are made.  Galerie 59 has exhibitions running for approximately two weeks at a time with a vernissage open to everyone, usually on the first day of the show. 

59 Rivoli
59, rue de Rivoli
75001 Paris