On the Rox is designed to be particularly transparent, both inside and out.
The structure consists of a crystalline icicle-like cube structure with a complex core inside the building. Its geometry is intentionally complex and solid in its materiality. It thus functions as a heat-energy-storing building battery according to the phase-change principle.
In contrast, the exterior appearance of On the Rox is simple and cubic.

Design, model and photography: Benjamin Rieß