1990 - 'Abstract landscape with Sunlight', large abstract painting; artist Fons Heijnsbroek, The Netherlands - A high resolution art image in free download to print, in public domain / Commons, CC-BY.
Flickr (Public Domain)
1247
5 Tori / 5個の輪環(りんかん)
Flickr (Public Domain)
637
4 crossing tetra-tori / 交差する4つの四芒星環
Flickr (Public Domain)
676
5 Knot-Tori / 5個の結び目
Flickr (Public Domain)
776
3 Cups / 3個のカップ
Flickr (Public Domain)
720
Knot-Tori / 結び目
Flickr (Public Domain)
801
3 Knot-Tori / 3個の結び目
Flickr (Public Domain)
698
6 Tori / 6個の輪環(りんかん)
Flickr (Public Domain)
653
5 Knots / 5つの結び目
Flickr (Public Domain)
724
5 crossing octa-tori / 交差する5つの八芒星環
Flickr (Public Domain)
647
3 Crossing hexa-tori / 交差する3個の六芒星環
Flickr (Public Domain)
704
Dodecahedron of Spheres
Flickr (Public Domain)
794
3 Tori / 3個の輪環(りんかん)
Flickr (Public Domain)
740
6 Tori or 3D Lissajous figures - Mathematica / 6個の輪環(りんかん)または立体(りったい)リサージュ図形(ずけい)