The Union Pacific train rolls through a tunnel cut out of a tree trunk, past Omaha Central High School and several other historic Omaha buildings. You become mesmerized as you watch it exit the covered bridge that spans a flowing river. Then you spot another train cross an overhead steel bridge and travel back into the woods. There is something fascinating about model railroad layouts, especially miniature versions of real existing structures and trains. Add Lauritzen Gardens’ natural landscaping, and the Model Railroad Garden, a miniature Omaha, becomes a work of art.