The design of Cayan Tower, a helical skyscraper that marks the Dubai skyline, is at once remarkable and subtle. The tower—with its dynamic, twisting shape, waterfront views and first class amenities—redefines international luxury standards and challenges the conventions of residential high-rise architecture. The residential tower is a pure expression of the idea that a building’s form should directly follow its structural framework - is also the tallest building in the world that boasts a 90-degree spiral. While the skyscraper’s floor plates are all identical, each is slightly rotated against the story below it, producing a full 90-degree twist over the course of the tower’s 307-meter rise. The benefits of this unique form, besides the aesthetic ones, are manifold. Wind load and solar heat gain are reduced compared to a rectilinear building of the same height, and a greater number of tenants are afforded desirable views of the nearby marina and gulf from every level, while preserving waterfront views for residents of neighboring buildings. Designed with Dubai’s arid desert climate and urban heat island effect in mind, prefabricated metal panels on cast-in-place concrete perimeter columns and repeating staggered screen panels filter direct sunlight to the units. Deep window sills also minimize direct light and provide a screen-like effect on the exterior of the building—shading both interior living spaces and terraces.