Model railroading enthusiasts visiting Ohio in the USA in April might like to diary the Great Train Expo planned for the Duke Energy Center, 525 Elm Street, Cincinnati, OH 45202 Saturday & Sunday – March 31 – April 1, 2007. The Cincinnati Great Train Expo will feature the Miami Valley Modular RR 28′ x 72′ N Scale Layout, Ohio Lego Train Club 20′ x 30′ Lego Train Layout and the Dalmatian Switching District 25′ x 26′ HO Scale Layout.