Sosohun is an environment-friendly guest house located in Paju-si South Korea. This small wooden house, with Thermowood cladding, is harmonized with surrounding environment and green nature. The house rationally utilizes energy the best way possible. The eaves of southern roof was constructed long to protect walls from sun and storm, east-west outdoor blinds and outer doors block direct light. The bathroom in the north and the plies in the warehouse prevent heat loss during cold winter time.