Mainline in Miniature at the Portage Station Museum, Pennsylvania

This HO scale model railroad layout, called Mainline in Miniature, sits on the second floor of an old train depot, now the local museum and home to the Portage Area Historical Society.  The detailed 225 square foot layout depicts the Portage Railroad, including notable railway sites such as the Horseshoe Curve, Gallitzin Tunnels, and Mule Shoe Curve.  It was built by local train enthusiast Charles Edwards, along with numerous volunteers, and opened to the public in 2008.