who built the plaza hotel in new york
McKim, Mead & White
Plaza Hotel
he hotel is located on the western side of Grand Army Plaza at the intersection with Central Park South (59th Street), on the southeastern corner of Central Park and just west of Fifth Avenue. Construction on the first Plaza Hotel at this location began in 1883. After the original builders foreclosed, McKim, Mead & White completed the hotel and it opened in 1890. The current 19-story, French Renaissance-inspired château-style building was designed by Henry Janeway Hardenbergh. Built in 27 months, it opened in 1907. 
wiki:20653974
Plaza Hotel [SEP] Introduction
The Plaza Hotel is a 20-story luxury hotel and condominium apartment building in Midtown Manhattan in New York City. It opened in 1907 and is now owned by Katara Hospitality. The hotel is located on the western side of Grand Army Plaza at the intersection with Central Park South (59th Street), on the southeastern corner of Central Park and just west of Fifth Avenue. Construction on the first Plaza Hotel at this location began in 1883. After the original builders foreclosed, McKim, Mead & White completed the hotel and it opened in 1890. The current 19-story, French Renaissance-inspired château-style building was designed by Henry Janeway Hardenbergh.