Every year in at the end of May, Sydney has a light festival called Vivid. For 3 weeks after dark, Sydney’s CBD and harbor buildings are illuminated by a colourful light show. The Opera house, Harbor bridge and botanical gardens are all lit up and there are interactive exhibitions throughout the city. What started in 2009 as a light efficiency display has now become a major tourism event for Sydney in the winter. I myself visited the harbor and took in the sights at 3 separate occasions, each time able to see something knew and pay witness to the massive crowds the lights attracted.