Ammonite fossil from Madagascar (© ThomasLENNE/Shutterstock)

Leshan Giant Buddha, Sichuan, China (© www.anotherdayattheoffice.org/Getty Images)

Using grid lines is a flexible and powerful way to place your elements on a grid, but, when looking at the code, it might be a bit hard to visualize.

Harbor seals at Robert Moses State Park, Long Island, New York (© Vicki Jauron, Babylon and Beyond Photography/Getty Images)

Artist Saype poses with his land art painting at UN Headquarters, Geneva, Switzerland (© Valentin Flauraud/EPA-EFE/Shutterstock)

Hungarian Parliament Building, Budapest, Hungary (© Alexander Spatari/Getty Images)

Male hooded merganser, Oregon (© Eric Vogt/TANDEM Stills + Motion)

Fall colors in Shenandoah National Park, Virginia (© Michael Ver Sprill/Getty Images)

A traboule in Lyon, France (© TPopova/Getty Images)

Irohazaka Road in fall, Nikko, Tochigi, Japan (© oneinchpunch/Shutterstock)