This smart house really exists in Warsaw. Its uniqueness lies in its unusual concept – the house is a real castle but only when his owner is away from home. In this case, the house looks like a bunker or secret building with impenetrable fence, with no windows and doors. But as soon as the owner enters the main gate – the house is miraculously transformed. Impenetrable concrete fence is folded, windows are open and eventually smart house turns into a luxury country mansion with an indoor pool. Interior of the house is designed in a minimalist style and looks modern. Transformation of the house so incredible that you have to see these photos by yourself.