Visitors to the Foster + Partners-designed Eastside Manhattan residential tower are greeted by a wall of darkly colored stone overflowing in a membrane of beaded, patterned water. Its design concept references the abstract paintings of Mark Rothko. The wall is organized into three horizontal fields of subtly different colors, separated by horizontal voids, from which light and delicate water sounds radiate. The horizontal voids involve clinging, negatively sloped flows, demonstrating craft with water.