The rainbow as visualization of the visible light spectrum has been a trademark of artist Ay-O since the 1960s. At that time Ay-O was exploring the state of the world through the senses - touch, hearing, olfactory and so on - and had rejected painting, and the rainbow could be described as his visual rendering of the light that renders the world visible to us. For the rainbow series he split the spectrum into red, orange, yellow, green, blue, indigo and violet, and proceeded to produce works in a variety of media. Rainbow Falls was used in a 1987 “happening” in which a rainbow banner 300m long and 5m wide was unfurled from the Eiffel Tower to the ground to coincide with the centenary of the Tower's construction, and also shown at a solo exhibition of the artist's work at Tokyo's Museum of Contemporary Art in 2012. On Roppongi Art Night, look for a dynamic rainbow cascading from the 40m-ceiling of the West Walk.