Which country is home to the world's highest railway?

The world's highest railway is the Qinghai-Tibet Railway, which is located in China. The railway connects Xining, the capital of Qinghai province, to Lhasa, the capital of Tibet, and covers a distance of 1,956 km. The railway was constructed between 2001 and 2006 and has an average altitude of over 4,000 meters, with the highest point reaching 5,072 meters above sea level. The construction of the railway was a challenging task due to the high altitude and difficult terrain.

The railway has become a popular tourist attraction, offering stunning views of the Himalayan Mountains and the Tibetan Plateau. The train journey takes approximately 22 hours, passing through snow-capped mountains, grasslands, and vast deserts. The train has oxygen supplies on board to help passengers adjust to the high altitude, and the windows are specially designed to protect passengers from the strong ultraviolet radiation in the high-altitude environment.