Flat Iron Building – Public Art and Architecture from Around the World

The Sentinel Building in North Beach

Posted by Cindy on August 25, 2011

Aug 252011

North Beach

Sentinel Building

The Columbus Tower, also known as the Sentinel Building, or to most as Zoetrope sits at the corners of Columbus Avenue, Kearny Street and Jackson Street. It is a flatiron building with a distinctive copper-green exterior. Designed by Salfield and Kohlberg the building is clad in white tile and copper. Construction was begun before the 1906 earthquake and fire. The framing survived the disaster, and the building was completed in 1907. The top floor initially housed the real estate offices of the notorious Abe Ruef, a local political figure who spent time in San Quentin for graft. The Kingston Trio owned the building and used it as their corporate headquarters during the 1960s.

By the early 1970s the building was falling gradually into a state of mild disrepair. The film director Francis Ford Coppola purchased the building, and renovated it into the building that can be seen today. Coppola then set up his own business in the building American Zoetrope, and it remains there to this day. The bottom floor is his restaurant Zoetrope, which is what most people see and why most people call it that.

To learn more about the Sentinel Read my article at Untapped Cities

Market Street’s Flatiron Building

Posted by Cindy on March 23, 2001

Mar 232001

Flat Iron Building
540 Market Street
Market Street / Financial District

Built in 1913 the Flatiron Building was designed by Havens & Toepke. It is one of the few, and most distinctive extant flatirons on Market Street. Flatirons were common north of Market both before and after the 1906 Earthquake and Fire, but the destruction of many of them such as the 1892 Crocker Building at Post and Market for high-rises has made them rare.

The skeletal structure of the building is well-adapted to an unusual (for San Francisco) Gothic treatment in which three-part bays are separated by thin piers of reinforced concrete scored to imitate masonry. A highly distinctive cantilevered cornice of Gothic pendants appears to be a prototype for Willis Polk’s 1917 Hallidie Building one block west. Described in 1913 as “pure English Gothic,” the medieval ornament also is used for interior railings, grilles, and elevator doors.

The most well known Flatiron in San Francisco is most likely the The Sentinal in North Beach, but since this is actually called The Flatiron Building the two are often confused.

Flatiron buildings are among the earliest skyscrapers. Their triangular shape was determined by real estate parcels created by diagonal streets, such as Market Street, that sliced through streets designed on a grid. They were named for their resemblance to clothes irons of the period.

The most famous flatiron building is the Fuller Building, of New York City and generally considered that city’s first skyscraper. It was designed by Daniel H. Burnham and built in 1902.

Charles I. Havens was born in New York in 1849 and arrived in California in 1856. Havens served for twelve years as City Architect of San Francisco, designing many of the early schools, none of which survive. He died in 1916.

William H. Toepke was born in California San Francisco July 12, 1870. He attended public schools and then entered the office of William Mooser in 1886 to study architecture. Four years later he became an employee of C.I. Havens and formed a partnership with Havens in 1897 that continued until 1915. Toepke died in 1949.