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Organic Concrete House

Set in the charming Karuizawa forest in Japan, this modern, concrete-built house is designed to respect the environment. Built around an age-old fir tree, the house blends in with the organic, yet powerful structure.

The Shell Residence is immersed in Nagano prefecture´s peaceful conifer forests, where it creates a stark contrast with its durable white facade. The house is located in Karuizawa, a popular weekend retreat for Tokyoites that is just 10 minutes away from the capital by Shinkansen. The residence was built around a centenarian Fir tree and is made from long-lasting, low-maintenance concrete, which shelters the home from the forest’s humidity and cold weather.

House is immersed in Nagano prefecture´s peaceful conifer forests, where it creates a stark contrast with its durable white facade. The house is located in Karuizawa, a popular weekend retreat for Tokyoites that is just 10 minutes away from the capital by Shinkansen. The residence was built around a centenarian Fir tree and is made from long-lasting, low-maintenance concrete, which shelters the home from the forest’s humidity and cold weather.

This concrete house is distinguished from traditional Japanese houses. The outdoor wooden deck is made of locally sourced wood and acts as an extension of the interior floors. The interiors of the house are bright, airy and wrapped. Due to the unique curved interior of the house, the furniture is made of hard, hard oak.

The flooring is made of local cherry trees and has a contrasting color tone with oak furniture. The interior layout is very small and consists of two different levels: the lower floor is used for public space, while the top floor is reserved for private use. An automated centralized system optimizes energy use by controlling the humidity, heating and ventilation of the house.