Raurimu, New Zealand
The Raurimu Spiral (Māori: Te Koru o Raurimu) is a single-track railway spiral, starting with a horseshoe curve, overcoming a 139-metre (456 ft) height difference, in the central North Island of New Zealand, on the North Island Main Trunk railway (NIMT) between Wellington and Auckland. It is a notab
le feat of civil engineering, having been called an "engineering masterpiece." The Institute of Professional Engineers of New Zealand has designated the spiral as a significant engineering heritage site.
Listen to the audio guide for Raurimu Spiral Free on WIP — starts by itself when you arrive, even with the screen off