A twist in the river, a node in the river: the node is an island. The island is a circulation-route: a dome that morphs into a bowl that morphs into a dome.
The bowl functions as a theater. Bleachers wave in and out; when the bowl isn’t used as a theater, it’s a plaza -- you sit face-to-face, in everyday conversation.
The dome functions as a café/restaurant. The entrance canopy twists down to make lounge seats around the dome. Curved triangular tables and stools are movable; they’re joined together, for different-sized groups of people. The rubber edge of the terrace above twists down to make multiple bar counters, at different heights. Water pours down the shell of the dome; up on the terrace, you sit under a waterfall.
The warping of dome into bowl, and vice versa, forms a playground, a space frame that functions as monkey bars, a tubular slide cuts through the grid. Functions are mixed on this island: the playground doubles as the backdrop of the stage and as a wall and ceiling.
Light streams up from beneath the bleachers, in the bowl, and down from the roof structure, in the dome.