The two wings of the original Kajima head office, the first of which was completed in 1968 and the second in 1971, were demolished to make way for the new Kajima Head Office Building, which is located immediately adjacent to the site of the former building. The white exterior frame of structural beams and columns carries on the tradition of clean-cut simplicity typically known as the "Kajima style." Double glazing, consisting of a combination of Low-E glass and heat absorbing glass, is used on all openings to achieve a thermal barrier comparable with that of a double-skinned facade. The office portion of the building is divided into modules measuring 3.6 meters by 3.6 meters to create a flexible workspace that can be adapted to a variety of tasks or organizational structures. The working environment is carefully controlled by a system of sensors at each module that discern the presence of people and automatically adjust the lighting and air-conditioning to optimum levels, as well as by solar control window blinds.