I saw and was awed by Olafur Eliasson's Object Defined By Activity series of light/water sculptures when I visited New York's Tanya Bonakdar Gallery last November. The strobelight installation Model For A Timeless Garden currently showing at London's Hayward Gallery seems to be a similar but scaled-up version. I look forward to seeing Eliasson's work again when I visit London in March.
Video from SouthbankCentre's youtube channel