Dubai’s striking Index Building, by Foster + Partners, incorporates three joined urban-scaled water-walls
beneath its ninety stories of mixed-use functions. The concept calls for entering the architecture from
under the tower, where shade and water greet and cool visitors before they move into airconditioned
lobbies. Around the building, lapped, sloped stone panels flow with waters which are
subsequently captured in a vast reflection pool. The tower touches the ground only at three lift lobbies
and eight structural fins, all of which repose in the pools. The lift lobbies are accessed via bridges. The
sloped water panels, which frame three sides of the urban-scaled space, are designed to be attractive
with active water flows or dry.