The "World's highest railway", "Lhasa Express", "Sky Train", "Rocket to the roof of the world"; no matter what it is called, the Qinghai-Tibet railway project is truly an engineering wonder across the world. It extends 1,956 kilometers from Xining, capital of Qinghai Province, to Lhasa. Nearly half of the Qinghai-Tibet Railway lies more than 4,000 meters above sea level and about 550 kilometers of this railway is laid on frozen earth. Its highest point is as high as 5,072 meters. The highest station on the line is Tanggula Mountain Pass Station (5072 meters above sea level) which is also the highest station in the world.
Construction of this railway was divided into two phases. The 815 km (506 mi) section between Xining and Golmud was completed by 1984. The 1,142 km (710 mi) section between Golmud and Lhasa was completed on 12 October 2005. It opened to regular trial service on 1 July 2006. Sceneries along the Qinghai-Tibet railway are amazingly beautiful, vast grasslands dotted with yaks and sheep, turquoise alpine holy lakes, shining snow-capped mountains and much more.