Hey! Gallery and art book store : try Halle Saint-Pierre (you can stop by the marchΓ© saint-pierre next to it, it's a fabric shop that hasn't changed since the 70s and it's fun to see!) For vintage stores, try Chinemachine, Le Poulpe ressourcerie, and les puces de Saint-Ouen if you're there on a sunday! Nice boutique : Espace Japonais Manekineko de Montmartre, but you have to call the owner and make an apt before coming! Also Philippe le libraire, nice comic shop. hope you have a great time :-)