A viable 4-km skyscraper designed by Russian architect Nikolai Nikitin in 1966.
I have added a red mark to represent the approximate height of the Burj Khalifa, which is currently the tallest structure ever built.
May 29th 2011
May 26th 2011
Sao Paulo
May 26th 2011
Christ The Redeemer | Rio de Janeiro
May 24th 2011
Dubai Metro Station
