sfc-hilbert-garden png
(796.5 KB, 3880x3912)

sfc-peano-garden png
(295.51 KB, 1960x1992)

sfc-sierpinski-garden png
(1.63 MB, 6440x6472)

Hilbert, Peano and Sierpinski space-filling curves, to go with the  >>/71/ Sierpinski carpets and triangles.