Harry and Tonto (movie, 1974)

Harry is a retired teacher in his 70s living in the Upper West Side of New York City where his late wife and he raised his children--where he's lived all his life. When the building he lives in is torn down to make way for a parking garage, Harry and his beloved cat Tonto begin a journey across the United States, visiting his children, seeing a world he never seemed to have the time to see before, making new friends, and saying goodbye to old friends.