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The timely faded green color of the Sentinel Building, also known as the Columbus Tower, or the San Francisco Flat Iron Building, is juxtaposed against the timeless classic white color of the Transamerica Pyramid Building, framed together with a background canvass of a beautiful clear blue sky in the city of fog - San Francisco, California, USA.

Both buildings visually appear to be opposite in their architectural design, with the Sentinel Building having its curvaceous highlights and the Transamerica with its, well, triangular punctuation. However, a closer design argument would essentially make the Sentinel design "triangular" in shape but standing sideways, with its base as its end side... ;) Both have "rounded tips" that accentuate their triangular shapes from the ground and the air... respectively.

Just a thought to ponder the wonder of a triangle.

The Columbus Tower is owned and operated by film director Francis Ford Coppola and his American Zoetrope Studios, with the Cafe Zoetrope headlining its prime street corner location and offering a bistro style affair along with a wine shop reflecting their Niebaum-Coppola Estate Winery in the Napa Valley.