A Beaux-Arts building opened in 1906 by John Jacob Astor IV—designated an official City landmark and included in the National Register of Historic Places—the Knickerbocker Hotel has welcomed dignitaries including Enrico Caruso, and it is rumored to have been the birthplace of the martini. A recent renovation has reimagined this upscale destination for a contemporary era of luxury. Hotel features include 330 guestrooms and suites, a comprehensive fitness studio, event space for up to 250 guests, signature restaurant Charlie Palmer at The Knick and St. Cloud, a 7,500-square-foot rooftop bar and terrace overlooking Times Square.