An open iron lattice — four curved legs, three platforms, one antenna. 125 m square at the base, 330 m to the tip of the beacon. Drag to orbit, scroll to zoom, or take the guided ascent.
The four legs flare from a 125 m square base to barely 16 m at the summit. The outline follows the funicular of the wind pressure: a gust acts harder and with more leverage the higher it blows, so the tower is widest exactly where the overturning bending moment is greatest — and almost vertical where that moment fades away.
The open lattice keeps solidity near 25 %: air passes through the iron instead of loading a solid face, so every member works as a slender strut or tie rather than resisting a billboard of wind.