The Tranz Alpine Railway, New Zealand.

The Tranz Alpine Express is a  passenger train in New Zealand.  This trip is often regarded to be one of the world's great train journeys for the scenery through which it passes. The journey of 223 kilometres  takes about four and a half hours. There are 19 tunnels and four viaducts, with the Staircase Viaduct being 73 metres (240 ft) high. The train runs daily between  Christchurch and Greymouth.  After leaving Christchurch, the train travels through the fertile  Canterbury Plains past the  Waimakariri River along the  Main South Line to Rolleston. It then turns onto the  Midland Line, which passes through the Southern Alps past the spectacular Waimakariri River gorge, via the  Otira Tunnel and terminates in Greymouth, on the West Coast.