Tatlin Monument for the 3rd International

Tatlin's Tower is a monumental building envisioned by the Russian artist Tatlin. It was never build. It was planned to be erected in Petrograd (aka St. Peterburg) after the Bolshevik Revolution of 1917, as the headquarters of the third international. The tower was to be build from industrial materials: iron, glass, and steel. It would have dwarfed the Eiffel Tower in Paris. The main form of it was a twin helix which spiraled up to 400 meters. Visitors would be transported around. At the base was a cube, designed as a venue for meetings. The entire structure would complete a rotation at different times.