The “Mushroom” is a kind of shelter, which can be used for different purposes, as a retreat or as a common room. The shape of the object has its inspiration from the shape of a mushroom. The reason of this was to achieve an elegant organic form. The structure can be placed in large numbers at various sites, recalling the spreading of fungi on the grounds of forests. The pattern of holes in the ceiling allows the infiltration of natural light. Thus an artificial starry sky appears within the object, this renders the atmosphere dreamy. Furthermore the penetrating light beams generate a light patterns inside the interior, which varies according to the setting and position of the sun and the “Mushroom”.