NBC Studios are located in the historic 30 Rockefeller Plaza in the borough of Manhattan, New York City. The building houses the NBC television network headquarters, its parent NBC Universal, and NBC's flagship station WNBC (Channel 4), as well as cable news channel MSNBC. The first NBC Radio City Studios began operating in the early 1930s. Tours of the studios began in 1933, suspended in 2014 and resumed on October 26, 2015.