McCormick-Stillman Railroad Park

Scottsdale Live Steamers
From Wikipedia:


 * The Scottsdale Live Steamers is a 7 1⁄2 in (190.5 mm) gauge miniature railroad which surrounds the Xeriscape Arboretum and was the former home of the Maricopa Live Steamers. The track is 3,000 feet (914 m) long and has a loading platform, a train shed, a transfer table ,a tunnel and one trestles. The layout has two main loops: the outer loop passes over the tunnel and the inner through it.