No.5 House the minimalist house in Saltsjo-Boo Sweden which has unique and simple name inspired by a Chinese puzzle box. This house was especially designed for young family with small children. An elongated box based on standardized dimensions for building materials. The Number 5 house has 3 bedrooms, one larger living/dining space with kitchen and bathroom. Each room then has one of its four sides completely glazed. Basically open towards one cardinal point each, leaving the opening in each façade. The surrounding landscape is always a part of the space. The bathroom, which has no wall opening, has a roof window instead. There is glazed doorway from the living area to a partially walled terrace, creating an outdoor room that is open to the sky at one end and open to view at the other. Design by Claesson Koivisto Rune.