Three historic railways comprise a World Heritage site recognizing their importance in trade and technological development. Still in use today, the Darjeeling Himalayan Railway, Nilgiri Mountain Railway, and Kalka Shimla Railway were all begun or completed in the 19th century.
Australia... The Katoomba Scenic Railway travels around the old mining region of the Blue Mountains. As of 2011, the Katoomba Scenic Railway holds the record as the world's steepest railway, with a maximum gradient of 52 degrees. Kuranda Scenic Railway takes passengers from Cairns to Kuranda, with views of rain forests, ravines, waterfalls and Barron Gorge National Park, #Australia