Prince Rainier III of Monaco arrives in New York with his daughter Caroline for a six-week visit. His Princess, the former Grace Kelly, arrives four hours later with the heir to the throne, Prince Albert. They left immediately for Philadelphia, Grace's hometown and while there will celebrate their 7th wedding anniversary. New York, NY Prince Rainier disembarking the plane with his daughter Caroline and the nanny s. MS The prince poses for the cameramen with Princess Caroline who is holding a bouquet of flowers. MS Four hours later, Princess Grace is disembarking the plane with her son, Prince Albert. MLS Princess Grace stomps at the bottom of the stairs with Prince Albert and waves to the camera.