McCormick-Stillman Railroad Park
McCormick-Stillman Railroad Park is a 30-acre (12 ha) railroad park located in Scottsdale, Arizona. It features a 15 in (381 mm) gauge railroad, a Magma Arizona Railroad locomotive, a railroad museum, three model railroad clubs and a 7+1⁄2 in (190.5 mm) gauge live steam railroad.
Source: Wikipedia — McCormick-Stillman Railroad Park (CC BY-SA 4.0)