Sunnyhills is a cake shop or bakery in Aoyama Tokyo that specializes in a type of pineapple cake. The building has been designed with very unique architecture, covered with three dimensional lattices of wooden slats that form around the exterior of shop. It was designed by architect Kengo Kuma. This joint system, used in making shoji paper doors is called Jiigoku Gumi and despite its modern look it is in fact a traditional method used in Japanese wooden architecture. That is, vertical and horizontal cross pieces of the same width are entwined in each other to form a grid. Traditionally the two pieces intersect in two dimensions, but in the case of this building they take on different dimensions which gives its form. The architect wanted to give the building a softer atmosphere to blend in with the neighborhood so wood was used.