• Heights of typical storeys: residential 3.4 m; office 4.4 m
• 28th and 49th apparatus floors of office tower; 7th, 27th, 46th, 65th and 83th ones of residential tower have entresol, so it can be counted 51 and 90 floors in that buildings accordingly.
• Abbreviation OKO means in Russian 'Joined with Crystal of Foundation'
• Europe's tallest building since summer 2014 till November 2014. Also in that time it was world's tallest building with reinforced concrete.
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