This amazing building is the Shell residence by Japanese Architect, Kotaro Ide of ARTechnic. The project concluded its works in 2008; the sculptural shell-like structure was built in the forest of Karuizawa, located in the Nagano, Japan. Its organic shape seems subtle within the forest, and the reinforced cement structure becomes one and harmonizes itself with the landscape. A clear distinction of the spaces [structure vs. nature] upgrades the quality of the residence as a shelter; the house will be sheltered from nature and utilize what nature can offer. The exterior of the â€œShellâ€ residence is wrapped in the shell-like concrete structure finished with a penetrative sealer for concretes, which contrasts with the green landscape. Deck wood is used on the patio, while a small amphitheater-like structure has been created in the center of the house around a full-grown tree. Large double glazed openings allow for uninterrupted views of the nature from within the house.