Belgrade-based design studio 4of7 and London-based practice Superfuisonlab have completed the conversion of a former restaurant in Belgrade, Serbia, into a gym and spa.

The main volume of the building, triangular in plan, elevated 15 meters above the river, is supported solely by a central core which contains two elevator shafts and double spiral staircase.

Approximately 390 translucent, triangular, back-lit panels are suspended from the ceiling’s steel structure.

Via Dezeen – More information about the project on the 4of7 blog. Photography by Ana Kostic.