This classic New York saloon is steeped in Irish charm and has a fascinating history. Established in 1884, P.J. Clarke’s has catered to a myriad of famous faces, including Frank Sinatra, Jackie Kennedy Onassis and Nat King Cole (who called the restaurant’s famous hamburgers “the Cadillac of burgers”). P.J. Clarke’s is also famous for its raw bar and comfort foods such as mac and cheese, shepherd’s pie and prime sterling silver hanger steak.