The basic concept behind the Z Design building, located next to Design Museum Holon (by Ron Arad), is the expression of the basic residential "aggregate" – the apartment – almost as an independent unit. This articulation is achieved simply as each second floor (containing four apartments) rotates around the building core relative to the two floors below or above. Thus also every second apartment gains a large 30 sqm "roof terrace", as an integral element of building mass.