Many thanks to si.em for sharing his selfie with Keanu on instagram. Photo was taken on Friday, September 21, 2018. The location tag was 3.1 Phillip Lim. From other photos posted at that location, it looks like Keanu attended the Anatomy of an Icon: 15 Seasons of Grey’s exhibition that is at the THNK 1994 Museum in West Hollywood September 21 – 23. Tickets are required for the exhibition. Cropped photo below.