This is the world's largest rail yard. It has 2850 acres, 8 miles long, 2 hump yards, 400 tracks & 1 diesel shop. If it was all laid end to end the tracks would equal 315 miles. When you arrive you watch a short film about the rail yard & history. Then ride the elevator up to the 7th floor to the open air observation deck, or the 8th floor which is enclosed & is staffed with a knowledgeable train worker. There is memorabilia to view, activities for children & another film explaining about the Orphan Train. This tower is referred to as the Golden Spike Tower & it didn't open until 2008. Here you get panoramic views of the whole rail yard. They also have a very nice gift shop which offers all sorts of train items but other things as well. We really enjoyed our short education about trains & the experience. Your kids would love this place!