The Ammann-Beenker tiling is an aperiodic tiling with 8-fold rotational symmetry. It uses two tiles: squares and 45° rhombi.
The ratio of rhombi to squares approaches 1 + √2 (the silver ratio ≈ 2.414).
Enable Diffraction to see the Fourier transform, showing the characteristic 8-fold symmetric pattern of quasicrystals.