Jeff Mahoney, The Gateway Arch (March theme: Lines, shapes, and patterns)

The Gateway Arch is a 630-foot-tall (192 m) monument in St. Louis, Missouri, United States. Clad in stainless steel and built in the form of a weighted catenary arch,[5] it is the world's tallest arch[4] and Missouri's tallest accessible structure. Some sources consider it the tallest human-made monument in the Western Hemisphere.The

Images have been resized for web display, which may cause some loss of image quality. Note: Original high-resolution images are used for judging.