November 30, 2016

North Shore Fractals


Fractal rock formations of Oahu's North Shore. Hawaii, 1983.


Photos by I. Peterson

November 27, 2016

Town Hall Symmetry


Symmetric facade of the Bremen Town hall. Bremen, Germany, 1985.

Photo by I. Peterson

November 26, 2016

November 25, 2016

Cutty Sark


Cutty Sark, Greenwich, England, 1975.

Photo by I. Peterson

November 24, 2016

Stonework Symmetry


Stonework design with threefold symmetry. U.S. Capitol grounds, Washington, D.C., 2014.


Design with fourfold symmetry.

Photos by I. Peterson

November 23, 2016

City Place Chicago


City Place. 676 North Michigan Avenue, Chicago, Illinois, 2009.

Photo by I. Peterson

November 22, 2016

Ice Fingers


Shenandoah National Park, Virginia, 2010.

Photo by I. Peterson

November 21, 2016

Mobile Fruit


Campbell Avenue, Campbell (The Orchard City), California, 2016.


Photos by I. Peterson

November 19, 2016

Capitol Lights


U.S. Capitol at dusk. Washington, D.C., 1982.

Photo by I. Peterson

November 18, 2016

Mourning Cloak


Mourning cloak butterfly (Nymphalis antiopa). Lake MacDonald, Quebec, 2009.

Photo by I. Peterson

November 16, 2016

Fractal Tree in Bronze


Mitered Fractal Tree by Koos Verhoeff, Tom Verhoeff, and Anton Bakker. Displayed at Bridges 2012, Towson University, Towson, Maryland, 2012.


Photo by I. Peterson

November 15, 2016

Cutout Building


Simmons Hall, Massachusetts Institute of Technology. Cambridge, Massachusetts, 2009.

Photo by I. Peterson

November 14, 2016

November 13, 2016

Tumbling Blocks


Tessellation Tango (detail) by Linda Vanderkolk and Scott Frankenberger. Mathematical Sciences Research Institute, Berkeley, California, 2011.

For more about the tiling pattern, see "Tessellation Tango."

Photo by I. Peterson

November 12, 2016

Star of Lozenges


Mosaic panel showing a star of lozenges, Antioch, 3rd century A.D. Baltimore Museum of Art, Baltimore, Maryland, 2012.

For other mosaic designs from Antioch with geometric patterns, see "Intersecting Octagons," "Stars and Squares," "Ancient Mosaic Design," and "Solomon's Knot."

Photo by I. Peterson

November 11, 2016

Stone Wall Flowers


Stone wall flowers. The Bahamas, 1969.

Photo by I. Peterson

November 10, 2016

First Impressions


First Impressions (The Gold Miner) by Bud Dumas. Playfair Street, The Rocks, Sydney, Australia, 1979.

Photo by I. Peterson

November 9, 2016

Glass Distribution


Triangular distribution of glasses. Hyatt Regency Austin, Austin, Texas, 2010.

See also "Light Rings."

Photo by I. Peterson

November 8, 2016

Atlanta Mandala


Painted mandala showing rotational symmetry. Homage to St. EOM's Pasaquan by Eddie Owens Martin, Folk Art Park, Atlanta, Georgia.

Photo by I. Peterson

November 7, 2016

Oak Leaves


White oak (Quercus alba). Berkeley Springs, West Virginia, 2016.

Photo by I. Peterson

November 6, 2016

November 5, 2016

Dawson House


T. H. B. Dawson House. Berkeley Springs, West Virginia, 2016.

Photo by I. Peterson

November 4, 2016

November 3, 2016

Bath Cottage


Bath Cottage (Bathkeepers Cottage). Berkeley Springs, West Virginia, 2016.


Photos by I. Peterson

November 2, 2016

November 1, 2016

Spring in Fall


Lord Fairfax Spring. Berkeley Springs State Park, Berkeley Springs, West Virginia, 2016.


Photos by I. Peterson