Build a massive coil out of stone around a ferromagnetic core, 500 feet high, engrave walls with Maxwell and QM diff equations, so future generations would know

Build a massive coil out of stone around a ferromagnetic core, 500 feet high, engrave walls with Maxwell and QM diff equations, so future generations would know that our civilization was built around electromagnetism. In reality, though, they'll think it's a tower of power with inscripted incantations for rituals.