What building was built earlier,  Manhattan Life Insurance Building or 15 Penn Plaza?
Manhattan Life Insurance Building The Manhattan Life Insurance Building was a 348 ft tower at 64-66 Broadway in New York City completed in 1894 to the designs of the architects of Kimball & Thompson and slightly extended north in 1904 making its new address 64-70 Broadway. It was the first skyscraper to pass 100 m in Manhattan.
15 Hudson Yards 15 Hudson Yards is a residential building currently under construction on Manhattan's West Side. Located in Chelsea near Hell's Kitchen Penn Station area, the building is a part of the Hudson Yards project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards. The tower started construction on December 4, 2014.