The Knickerbocker opened in 1906 . The newly-opened hotel will have 330 guestrooms , including 31 suites . The Times Square hotel closed in 1921 , and the building was used for offices . It is now a museum of New York City history
The Knickerbocker opened in 1906 . The Times Square hotel closed in 1921 , and the building was used for offices . It is now a museum of New York City history