North Shore Fractals

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

Photos by I. Peterson

Corinth Ruins

Ruins of ancient Corinth, Greece, 1977.

Photo by I. Peterson

Town Hall Symmetry

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

Photo by I. Peterson

Skewed Clock

Clock in the leaning tower of Tbilisi. Rezo Gabriadze puppet theater, Tbilisi, Georgia, 2012.

Photos by I. Peterson

Cutty Sark

Cutty Sark, Greenwich, England, 1975.

Photo by I. Peterson

Stonework Symmetry

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

Design with fourfold symmetry.

Photos by I. Peterson

City Place Chicago

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

Photo by I. Peterson

Ice Fingers

Shenandoah National Park, Virginia, 2010.

Photo by I. Peterson

Mobile Fruit

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

Photos by I. Peterson

Mount Ritter

Mount Ritter and Thousand Island Lake. Ansel Adams Wilderness, Sierra Nevada, California, 1984.

Photo by I. Peterson

Capitol Lights

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

Photo by I. Peterson

Mourning Cloak

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

Photo by I. Peterson

Sunwapta Waters

Sunwapta River. Jasper National Park, Alberta, 1977.

Photo by I. Peterson

Fractal Tree in Bronze

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

See also "Pythagorean Fractal Tree."

Photo by I. Peterson

Cutout Building

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

Photo by I. Peterson

Inverse Staircase

Monument to Francesc Macia by Josep Maria Subirachs. Placa Catalunya, Barcelona, Spain, 2007.

Photos by I. Peterson

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

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

Stone Wall Flowers

Stone wall flowers. The Bahamas, 1969.

Photo by I. Peterson

First Impressions

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

Photo by I. Peterson

Glass Distribution

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

See also "Light Rings."

Photo by I. Peterson

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

Oak Leaves

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

Photo by I. Peterson

Italianate Details and Symmetry

Fairfax Street, Berkeley Springs, West Virginia, 2016.

Photo by I. Peterson

Dawson House

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

Photo by I. Peterson

Stepped Brickwork

Corbeled masonry, Berkeley Springs Presbyterian Church. Berkeley Springs, West Virginia, 2016.

Photos by I. Peterson

Bath Cottage

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

Photos by I. Peterson

Rumsey's Millstone

Rumsey's millstone. Berkeley Springs State Park, Berkeley Springs, West Virginia, 2016.

Photo by I. Peterson

Spring in Fall

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

Photos by I. Peterson