The Knickerbocker Club is a private social club in New York City. Known informally as "The Knick," the club was founded on the evening of October 31, 1871.   The first clubhouse opened on February 2, 1872, a few blocks from Delmonico's.  The Club's present clubhouse is located at the corner of Fifth Avenue and East 62nd Street in New York City. Built in 1913, it was opened June 21, 1915.