Wall Street Stop, a great photo series by Reinier Gerritsen, taken on the Wall Street subway when the financial crisis of 2009 was at its peak. His great composition is created by stitching (multiple shots of the same scene) images together to form one captivating moment where everyone is in the same focus, this stimulates the visual intrigue of each scene. More
This is a work in progress, but basically Conductor by Alexander Chen is the subway map of New York City turned into a musical instrument, which when finished will create music by runnning the train timetable and where the train crosses another line a note will sound depending on the length of that section of line. Should be awesome when finished.
More underground adventures on the NYC subway system with the short film Undercity by Andrew Wonder.