SketchUp 1

Section #13 chosen to develop in 3D.
(v) "shackled" - Nolan
(a) "sunken" - Piccinini

Images of SketchUp 3D model.

Materials

Left tower: light colours, painted concrete for main structure and balcony, glass and steel for the rear glass 'arm'.
Right tower: dark colours, metal sheet rendering, well-defined edges

Vortex: concrete, acts as a sunlight through the middle of the 'vortex' (perspex or glass base)
Studio observation area: glass walls for viewing