As the hot desert sun wanes across the plaza, horizontal shades along the roof of the museum, over the cafe, and at the bus stop suddenly rise in a graceful ballet. Pivoting upwards one at a time, they become a row of vertical screens. Gradually, they take on the subtle, complex patterns of a Moorish mosaic, a backdrop for the evening's performance. On the lawn, as the last soccer players leave, people settle down on their chairs and blankets and turn to the stage. Two kids take a running leap at the curtain of water, but it parts before they can get wet. Landing in a puddle on the other side, the sound starts a wave down the curtain that ripples along and fades in the distance. Jump twice and you get a bigger wave; jump in syncopation and you get the biggest waves of all.