Two years ago, I took one of the first public tours of the Dupont Underground space, which was still very raw. Now, after two years of work, the non-profit Dupont Underground has opened the space for more tours and future events.  This tour included light projections in one area of the tunnel.  The space is still pretty raw, but they have expanded the tours to include the full circle of the tracks under Dupont Circle, including the remains of the short-lived 1995 food court. The remnants of last spring’s Re-Ball exhibit are still there too.