The oficial name - Złota 44 (from the building's pre-war address ulica ZLota, Golden street).
It is one of the newest Warsaw skyscrapers, to be finished in 2014.
192 m high, 54 storeys, designed by the Polish-born American architect Daniel Libeskind in association with Polish architects Artchitecture.
When completed, Zlota 44 will be Warsaw's third tallest skyscraper.