June 30, 2016

Window Circles and Segments


Violette Hall, Truman State University. Kirksville, Missouri, 2009.

Photo by I. Peterson

June 29, 2016

Paint and Sand


Kingston, Ontario, 1974.

Photo by I. Peterson

June 28, 2016

Pizza, Beer, and Pi


Pi Pizzeria. Bethesda, Maryland, 2016.


Photos by I. Peterson

June 27, 2016

Horse Fences


Kentucky Horse Park. Lexington, Kentucky, 1982.

Photo by I. Peterson

June 26, 2016

June 25, 2016

June 24, 2016

Window Integration


Window curves and lines. Monona Terrace, Madison, Wisconsin, 2008.

For more scenes of Monona Terrace, see "Dome Lights." See also "Walls, Windows, and Riemann Sums."

Photo by I. Peterson

Iceland Waterfall


Gullfoss. Iceland, 1985.

Photo by I. Peterson

June 23, 2016

Grid Clouds


Cloud reflections. Houston, 2009.

Photo by I. Peterson

June 22, 2016

June 21, 2016

June 20, 2016

Hawaii Hibiscus


Hibiscus. Oahu, Hawaii, 1983.

Photo by I. Peterson

June 19, 2016

June 18, 2016

Rhine Town


Drosselhof. Ruedesheim am Rhein, Germany, 1985.

Photo by I. Peterson

June 17, 2016

Balcony Shadows


Balcony shadows. Tbilisi, Georgia, 2012.

Photo by I. Peterson

June 16, 2016

Forbidden Passage


"There is no intention to dedicate this private thoroughfare to the public." Aberdeen Park, Highbury, London, England, 1975.


Photos by I. Peterson

June 15, 2016

Rainbow Frieze


Gravity's Rainbow, glass frieze (detail) by Al Held. Ronald Reagan Washington National Airport, Arlington, Virginia, 2016.


See also "Dome Squared."

Photos by I. Peterson

June 14, 2016

Brick Curves


Entrance canopy, Hamerschlag Hall. Carnegie Mellon University, Pittsburgh, Pennsylvania, 2009.


Photos by I. Peterson

June 13, 2016

Building Bulges


Peter B. Lewis Building, designed by Frank Gehry. Case Western Reserve University, Cleveland, Ohio, 2011.


Photos by I. Peterson

June 12, 2016

Star Plaza


Symmetrical star pattern. Chicago, Illinois, 2009.


Photos by I. Peterson

June 11, 2016

Leafy Capitals


A symmetric view of columns with leafy capitals. University of Virginia, Charlottesville, Virginia, 1977.

Photo by I. Peterson

June 10, 2016

Charlotte Structures


View of Duke Energy Center. Charlotte, North Carolina, 2011.

Photo by I. Peterson

June 9, 2016

Boats at Dock


Docked boats. Lunenberg, Nova Scotia, 1974.

Photo by I. Peterson

June 8, 2016

Raft Ripples


Swimming raft at dusk. Lake MacDonald, Quebec, 2009.

Photo by I. Peterson

June 7, 2016

June 5, 2016

Fractal Blanket


Crocheted H-fractal blanket by Kyle Calderhead. Displayed at Bridges 2012, Towson University, Maryland.


For other artworks at Bridges 2012, see "Brick Torus" and "Gyrangle."

Photos by I. Peterson

June 4, 2016

Tetrahedral Cutout


For Marjorie by Tony Smith has a modular structure that would fit within a tetrahedron. Massachusetts Institute of Technology, Cambridge, Massachusetts, 2009.


For other sculptures by Tony Smith, see "Solid Illusion" and "Octahedral Moondog."

Photos by I. Peterson

June 3, 2016

Gate Star


Sather Gate, University of California, Berkeley, 2011.

Photo by I. Peterson

June 2, 2016

Spires and Cranes


Basilica de la Sagrada Familia. Barcelona, Spain, 2007.

Photo by I. Peterson

June 1, 2016

Intersecting Octagons


Mosaic panel with intersecting octagons, Antioch, 3rd century A.D. Baltimore Museum of Art, Baltimore, Maryland, 2012.

For other ancient mosaics at the Baltimore Museum of Art, see "Stars and Squares," "Ancient Mosaic Design," and "Solomon's Knot."

Photo by I. Peterson