The concept of building the quarter around the roundabout ONZ. The project assumed 3 components of the investment projected in building heights. 39m from the ONZ roundabout, 27,5m from Swiętokrzyska Street and a high-rise building at the intersection of Twarda and Marianska Streets where 150m height and 35 floors were designed. The project assumed 3 underground garage floors with 400 parking spaces. In total 458 places were designed for the entire project. A connection to the Rondo ONZ metro station has been designed on level -2. Passengers are transported by escalators directly to the ground floor of the building where a spacious green patio was designed, where service and commercial premises were located. The design includes facilities with a total leasable area of around 61,000 sqm.