Window Circles and Segments

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

Photo by I. Peterson

Paint and Sand

Kingston, Ontario, 1974.

Photo by I. Peterson

Pizza, Beer, and Pi

Pi Pizzeria. Bethesda, Maryland, 2016.

Photos by I. Peterson

Horse Fences

Kentucky Horse Park. Lexington, Kentucky, 1982.

Photo by I. Peterson

Como Sundial

Sundial, Como Cathedral (Duomo di Como). Como, Italy, 2010.

For other sundials, see "Spherical Sundial" and "Giant Sundial."

Photos by I. Peterson

Yellow Palace

Deogarh Mahal. Rajasthan, India, 2010.

Photos by I. Peterson

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

Grid Clouds

Cloud reflections. Houston, 2009.

Photo by I. Peterson

Spires and Pines

Cathedral of St. Helena. Helena, Montana, 2008.

Photo by I. Peterson

Waimea Canyon

Waimea Canyon. Kauai, Hawaii, 1983.

Photo by I. Peterson

Hawaii Hibiscus

Hibiscus. Oahu, Hawaii, 1983.

Photo by I. Peterson

Corinth Canal

Corinth Canal, Greece, 1977.

Photos by I. Peterson

Rhine Town

Drosselhof. Ruedesheim am Rhein, Germany, 1985.

Photo by I. Peterson

Balcony Shadows

Balcony shadows. Tbilisi, Georgia, 2012.

Photo by I. Peterson

Forbidden Passage

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

Photos by I. Peterson

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

Brick Curves

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

Photos by I. Peterson

Building Bulges

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

Photos by I. Peterson

Star Plaza

Symmetrical star pattern. Chicago, Illinois, 2009.

Photos by I. Peterson

Leafy Capitals

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

Photo by I. Peterson

Charlotte Structures

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

Photo by I. Peterson

Boats at Dock

Docked boats. Lunenberg, Nova Scotia, 1974.

Photo by I. Peterson

Raft Ripples

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

Photo by I. Peterson

Pacific Sentinel

Cabrillo National Monument. San Diego, California, 2013.

Photo by I. Peterson

Angel Glacier

Angel Glacier. Jasper National Park, Alberta, 1977.

Photo by I. Peterson

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

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

Gate Star

Sather Gate, University of California, Berkeley, 2011.

Photo by I. Peterson

Spires and Cranes

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

Photo by I. Peterson

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