Dror Bar-Natan's Image Gallery: Symmetry: Tilings:

The 0 Group

A typical web page background
A typical web page background.
A Lego Piece
A Lego piece, June 2000.
Yeshua Billboard
Billboard ads for http://www.yeshua.co.il, Jerusalem Februaray 2001.
Future Shop TVs
Television screens at a Future Shop, Toronto, August 2002.
Renaissance Hotel
The Jerusalem Renaissance Hotel, November 2000.

An Inner Tube

The quotient orbifold for the group 0 is a torus; i.e., an inner tube.