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.
Sohmer Piano Building The Sohmer Piano Building, or Sohmer Building, is a Neo-classical  Beaux-Arts building located at 170 Fifth Avenue at East 22nd Street, in the Flatiron District neighborhood of the New York City borough of Manhattan, diagonally southwest of the Flatiron Building. Designed by Robert Maynicke as a store-and-loft building for real-estate developer Henry Corn, and built in 1897-98 it is easily recognizable by its gold dome, which sits on top of a 2-story octagonal cupola.