Every night as part of the annual Vivid Festival, the Sydney Harbour Bridge lights up with 2,000 LED tubes that change colour based on selections from users on the ground.
The lights are controlled through a giant touchscreen that lets you select a rainbow of colours for all aspects of the bridge, including the roadway and the arch.
Australian lighting and events company 32 Hundred Lighting manually carts all the gear up on the bridge in backpacks, installing the LEDs and cabling above traffic.
In the harbour itself, ferries and cruise boats are fitted out with Intel Galileo boards. In conjunction with GPS, the LEDs change colour depending on the boat's location in the harbour.
CNET takes a look at the technology lighting up Sydney Harbour in the video above.