The European luxurious train, Golden Eagle Trans-Siberian Express, arrived in Iranian northeastern city of Mashhad on Monday.
The train carrying some 40 international tourists started its journey from Moscow and has already passed through Kazakhstan, Uzbekistan and Turkmenistan.
The tourists are from the UK, the US, Australia, South Africa, France, Taiwan, China and Hong Kong, Russia’s Sputnik news agency reported.
It will later take the tourists to Iran’s major tourist destinations like Kerman, Yazd, Isfahan, and Shiraz.
The train is expected in Tehran on 27 November where it will stay for two nights. It will later return to Mashhad and then to Turkmenistan and further on its way back to unwind its 18-day tour.
The Golden Eagle Trans-Siberian Express is one of the world’s longest train rides at 6,850 miles. Its route extends from Moscow to Vladivostok, a Russian city that borders China and North Korea.
Passengers can choose from 16 eastbound or westbound journey dates from May to September.