November 20, 2017

November 18, 2017

White Yellow Black


Building decoration, Toronto, Ontario, 2006.

Photo by I. Peterson

November 17, 2017

Golden Triangle


Banner with logo of the Golden Triangle Business Improvement District: Moebius strip,or not?. Washington, D.C., 2017.

See also "Impossible Logo."

Photo by I. Peterson

November 16, 2017

Gold Tree


Gunston Hall, Mason Neck, Virginia, 1982.

Photo by I. Peterson

November 15, 2017

Mace Moebius


Mace Moebius by Charles O. Perry. Crystal City, Virginia, 2000.

See also "Mobius Continuum" and "Moebius Eclipse." 

Photo by I. Peterson

November 14, 2017

Ear on the Sky


Green Bank, West Virginia, 1977.

Photo by I.Peterson

November 12, 2017

Hypercube Model


Constructed from seven square cylinders, each made from a strip of four squares, this model of an unfolded hypercube, created by Thomas F. Banchoff, collapses into a flat, two-dimensional configuration.


Photos by I. Peterson

November 11, 2017

Crinkled Torus


Crinkled torus by William T. Webber.


A properly creased, rectangular sheet can be turned into a crinkled torus shape.


Photos by I. Peterson; model by William T. Webber.

November 10, 2017

Shoreline Reflection


Winona, Minnesota, 2008.


Photos by I. Peterson


November 9, 2017

Wooster Autumn


Kauke Hall. College of Wooster, Wooster, Ohio, 2009.

Photo by I. Peterson

November 7, 2017

Potomac View


View of the Potomac River from the lawn of George Washington's Mount Vernon. Mount Vernon, Virginia, 1981.

Photo by I. Peterson

November 5, 2017

Silver Leaves


Bloor Parkette (southeast corner of Bloor Street West and Spadina Avenue), Toronto, Ontario, 2009.


See also "Leaf on Leaf."

Photos by I. Peterson

November 4, 2017

November 3, 2017

November 2, 2017

Diamond Tree


Geometric diamond grid pattern overlaid on fractal-like tree branches. Ottawa, Ontario, 1974.

Photo by I. Peterson

November 1, 2017

Lake Firs


Northwestern Ontario, 1977.

Photo by I. Peterson