I've read the book, the Polar Express and later on, saw the movie. I myself have always visited Santa Claus when I was a lad and so did my nephew. I did in fact did a search on the real Santa Claus. He was originally known as Saint Nicholas of Myra. A Eastern Greek Orthodox Bishop. My nephew knows very little about the origins of Santa Claus. But eventually he'll learn the truth and know the true meaning of Christmas.