Nautilus Tower: Spiral Staircase in Shell Form
6+
style_realistisch-detailliert
Recommended materials
Fine-liner pens
colored pencils
gel pens
This is how it could look
A breathtaking tower built in the exact form of a nautilus shell cross-section, with a central spiral staircase following the golden ratio, proportionally growing floor chambers, balconies following the shell curvature and a cut-away view of all internal levels.