You can find information & resources of science, biotechnology, chemistry, ecology, technology, science resources, mechanical engineering, earth sciences, astrophysics, nuclear & molecular at PortalScience.com
GeomeTricks
Explore complex geometric structures based upon the 'basic joint'; an interconnectable joint composed of four intersecting sets of three triangular prisms. Includes assembly instructions, sculpture photographs and interactive virtual 3D models.
http://www.geometricks.com/
Islamic and Geometric Art
A personal journey through aspects of geometric art with particular reference to Islamic design. The site includes full descriptions and methods for building often complex structures.
http://www.geometricdesign.co.uk/
The World of Escher
The web site to explore the great M.C. Escher artworks. Each image has commentary and a zoom mode.
http://www.worldofescher.com/
