Tatlin's Tower

From Wikipedia:

Tatlin's Constructivist tower was to be built from industrial materials: iron, glass and steel. In materials, shape, and function, it was envisaged as a towering symbol of modernity. It would have dwarfed the Eiffel Tower in Paris. The tower's main form was a twin helix which spiraled up to 400 m in height, which visitors would be transported around with the aid of various mechanical devices. The main framework would contain four large suspended geometric structures. These structures would rotate at different rates of speed. At the base of the structure was a cube which was designed as a venue for lectures, conferences and legislative meetings, and this would complete a rotation in the span of one year. Above the cube would be a smaller pyramid housing executive activities and completing a rotation once a month. Further up would be a cylinder, which was to house an information centre, issuing news bulletins and manifestos via telegraph, radio and loudspeaker, and would complete a rotation once a day. At the top, there would be a hemisphere for radio equipment. There were also plans to install a gigantic open-air screen on the cylinder, and a further projector which would be able to cast messages across the clouds on any overcast day.

Tatlin achieved fame as the architect who designed the huge Monument to the Third International, also known as Tatlin's Tower. Planned in 1920, the monument, was to be a tall tower in iron, glass and steel which would have dwarfed the Eiffel Tower in Paris (the Monument to the Third International was a third taller at 1,300 feet high). Inside the iron-and-steel structure of twin spirals, the design envisaged three building blocks, covered with glass windows, which would rotate at different speeds (the first one, a cube, once a year; the second one, a pyramid, once a month; the third one, a cylinder, once a day). High prices prevented Tatlin from executing the plan, and no building such as this was erected in his day.

Tatlin was also regarded as a progenitor of Russian post-Revolutionary Constructivist art with his pre-Revolutionary counter-reliefs — structures made of wood and iron for hanging in wall corners. He conceived these sculptures in order to question the traditional idea of painting, though he did not regard himself as a Constructivist and objected to many of the movement's ideas. Later prominent constructivists included Varvara Stepanova, Alexander Rodchenko, Manuel Rendón Seminario, Joaquín Torres García, Laszlo Moholy-Nagy, Antoine Pevsner and Naum Gabo.