A virtual waterfall cascades over the iconic Grand Palais in Paris. On display until March 29, the awe-inspiring facade is the handiwork of teamLab, the Japanese artists behind Tokyo's interactive hanging gardens, LED Christmas trees, and a digital universe of water. TeamLab describes Universe of Water Particles on the Grand Palais as a "continuum of hundreds of thousand of water particles that flow in accordance with how the computer calculates the interaction of the particles…and uses what we consider to be the logic structure of spatial recognition of our Japanese Ancestors."Universe of Water Particles on the Grand Palais joins video projections from Dominic Harris and Mounir Fatmir, all of which are illuminating the histroic structure this week as part of Art Paris Art Fair 2015.