San Francisco, CA Photo - Transamerica Pyramid, San Francisco, California

The Transamerica Pyramid is the tallest skyscraper in the San Francisco skyline and one of its most iconic. Although the building no longer houses the headquarters of the Transamerica Corporation, it is still strongly associated with the company and is depicted in the company's logo. Designed by architect William Pereira and built by Hathaway Dinwiddie Construction Company, at 260 m (850 ft), upon completion in 1972 it was among the five tallest buildings in the world. Columbus Tower, also known as the Sentinel Building is a mixed-used building in San Francisco, California completed in 1907. The distinctive copper-green Flatiron style structure

Carol M. Highsmith (born 1946) is a photographer, author, and publisher who has photographed all 50 of the United States, the District of Columbia, and Puerto Rico for 30 years. She specializes in documenting architecture, ranging from the monumental to the everyday and whimsical. Highsmith is donating her life ’s work of more than 100,000 images, copyright-free, to the Library of Congress, which established a rare one-person archive. Out of 14 million images, the Carol M. Highsmith collection is featured in the top six alongside of Mathew Brady and Dorethea Lange. Credit line: Photographs in the Carol M. Highsmith Archive, Library of Congress, Prints and Photographs Division.

Credit line: The Jon B. Lovelace Collection of California Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Photographs Division.