One of the coolest art installations we have seen:
“Kinetic Rain is a moving sculpture that was installed in early July 2012 in the Departure-Check-in hall of Terminal 1 of Singapore Changi Airport as part of that terminal’s refurbishment. Spanning an area of 75 square metres (810 sq ft) and a height of 7.3 metres (24 ft), it has been billed as the world’s largest kinetic sculpture.
The installation consists of two separate segments, installed several meters apart. Each segment consists of 608 copper-plated aluminum raindrops, each of which weighs 180 grams (6.3 oz) and is suspended by a thin wire. Computer-controlled motors attached to the wires can move each raindrop up and down independently, and thereby make the elements form elaborate moving shapes. The installation is programmed to make the elements morph into 16 different shapes during a 15-minute loop, including flight-related shapes such as airplanes, kites or hot air balloons.”
—taken from the installation’s wikipedia page