The Union Station Archway welcomes visitor to the Grand Exhibit Hall featuring artifacts, memorabilia and models of the great railroads that helped develop Western New York and the nation. Displays feature the The Empire State Express, 20th Century Limited, the Black Diamond, the Phoebe Snow, the Burlington Zephyr, the Pennsylvania Railroad and many more. This hall is 240 ft by 34 ft. The center of the hall will contain the largest HO scale train layout and diorama assembled on one floor.