The 'Onyx' dwellings are located at the junction of Krˇlowej Jadwigi and Pylna streets in the Wola Justowska district of Krakow. Every house is about 110 m2 (almost 1200 sq. feet) in floor space. The correct functionality of each small house is assured by splitting the interior into a day zone on the ground floor and a night zone on the first floor. The ground floor features a very well lit living room with a kitchen annexe and a dining room, a toilet and a large entrance enclosure. The first floor includes two bedrooms and a bathroom. Each house has a terrace and a garden. The fašades are made of 'Trespa Meteon' fašade boards.