Cosmopolitan Twarda 2/4, formerly known as Twarda Tower or Hines Tower, is a mainly residential skyscraper (160 meters high, 44 storeys) in central Warsaw, Poland. The project was developed by Tacit Development Polska.The tower includes 252 apartments ranging from 54 to 198 square metres (580 to 2,130 sq ft), with a net total area of above-ground floors of as much as 32,000 m2 (340,000 sq ft). Four penthouses are planned to be situated on the top floor.