WET collaborated with architects Pei Cobb Freed & Partners in shaping the threshold of the Anggana Danamon Bank’s twin towers in Jakarta’s business district. Concentric circles and spiral stonework guide feet and eyes toward a bubbly bracelet of activity, where pillars of water sprout from the ground, leaping in time to a song of their own making—reaching as high as twenty meters above the plaza floor. The absence of any kind of barrier or balustrade lends the square an air of possibility, as if pedestrians were not approaching the doorstep of serious finance, but exploring a water park or strolling past a sprinkler system gone wild. At the height of a balmy Indonesian summer, what’s to stop overheated bankers from suddenly altering course and racing through the frothy spray? A contrasting feature hugs the building’s perimeter, where glass plates hover in a checkerboard pattern above a shallow pool, recalling a life-sized novelty chess set. Jets beneath the glass compose a geometric pattern best appreciated from above, and the water trickling back into the pool creates a delicate ambient sound. As the tropical sun sets, both features transform for the pleasure of those working late. The fountain and the checkerboard pool illuminate with halos of soft, white light, making it clear that the waterworks don’t just serve as a welcome, they also persuade visitors to linger long after the day is over.