Which was completed first, Manhattan Life Insurance Building or the Singer Building?
Singer Building The Singer Building or Singer Tower, at Liberty Street and Broadway in Lower Manhattan's Financial District, in the U.S. state of New York, was a 47-story office building completed in 1908 as the headquarters of the Singer Manufacturing Company. It was the tallest building in the world from 1908 to 1909. It was torn down in 1968, together with the adjacent City Investing Building, and is now the site of One Liberty Plaza. When it was razed, it became the tallest building ever to be demolished, and is still the third-tallest building ever to be destroyed (after the World Trade Center towers) and the tallest to be purposely demolished by its owner.
100 First Plaza 100 First Plaza (also known as the Delta Dental Tower) is a 27-story, 136 m high-rise office building located at 100 First Street in the Financial District of San Francisco, California. Construction of the building was completed in 1988. It is the 30th-tallest building in the city. Skidmore, Owings & Merrill served as the design architects for the 100 First Plaza development that was designed with several setbacks, along with a grooved and faceted façade, and contains several rooftop curtain walls, and a notable 19 m spire.