Laser shows run up and down the buildings up until about midnight for a two week period at the end of may start of June.
The main feature of the show is the Sydney Opera House. It is certainly an impressive building at any time yet it really comes to life when they turn on the lights and music. Below is one of the only good photos I got of the opera house, I haven't really taken night photos before and most of them ended up being blurry. Need to take a stand next time to hold the camera steady.
Below is a short video I took on the night, mind my dodgey camera work as I got distracted at the start.