“After Dark” was an installation by artists The Workers which patrolled the halls of the Tate Modern and Tate Britain last year. Visitors to the AfterDark.io website were able to control the Raspberry Pi-powered robots and view streamed video from the galleries. The first user of the system was astronaut Commander Chris Hadfield (who will be going up to the ISS soon accompanied by Raspberry Pis from the AstroPi project). Hopefully, the After Dark team will be allowed into other galleries at some point – check out their website and sign up for their mailing list to be informed if this happens! Watch the video below for a trailer of the installation.