If you're looking for somewhere that has an an excellent selection of artist books then Yvon Lambert is the place to go. Not only that but they sell incredible tote bags, with great straps and nice minimal design that will last you a life time. Out the back is a small gallery space, often showcasing the work of featured artist who's book is for sale in the shop. One of my favourite things about this shop is how friendly and welcomign they are! Not only that but they do cool collaborations, such as the one with David Horvitz, where he emails them a new photograph of the sky every day, the bookshop prints it out and you can only buy that one image on the day.
L'Officine Universelle Buly, also known as simply Buly 1803 is a beautiful shop based on the Rue Bonaparte in Paris, it specialises in refined, artisanal beauty products.
62m2 phosphorescente painting on concrete in the hall of a building in the 18 arrondissement, Metro Stalingrad. You can see it from the street. I made it with the architect Takami Nakamoto, discover more over here