8. Tanggula Mountain Railway Station, Tibet At 5,068m above sea level Tanggula is the world's highest train station.
It is found on the Qingzang railway line which runs from Qinghai to Lhasa, in Tibet.
Telegraph Travel's Fionnuala McHugh embarked on a 4,000 mile rail journey from Hong Kong to Lhasa last year, including a stop at Tanggula.
CTS Horizons offers packages to the region, including train tickets.