Sigle family house located in Vienna in quiete and green area of Wolfersberg. According to strong urban parameters and limits and distinctive client`s requirements, space organization was quite complex. In order to achieve full funcionality folowed by sustainable instalation sistems we designed house with basement living area opened to small garden terasse with glass wall of the swimmingpool. So, whole basement area is well lightened by the sun light through the pool, pool`s glass wall direct to living and dining area. Ground floor is materialised with mirrors to achieve efect of invisible part of house with reflection of surounding greenery. First floor is wooden flying cube where is situated apartment.