NSK is the no.1 global market share company in dental hand pieces. The idea of a light well emerged called “Center Court” composing a communication core area. The spiral slope that represents a symbolic figure of “ultra-high-speed rotation technology” ascends along the inverted conical RC wall, and seamlessly connects each floor to encourage a variety of communication. Through repeated studies on the rain-water flow, light reflection and shading, we invented a cladding system in aluminum called ‘Σ panel’, which controls the interior space environment through seasonal changes.