We then take the night train to Tehran. The station is huge, although there are only a few trains leaving every day and there is only one passenger train line. You have to pass your X-ray baggage and give your ID to buy a ticket! The train is large luxury with TV, air conditioning, berths, breakfast and tea at discretion. We sympathize with a chemical engineer who works on a large petrochemical platform. Ben and he discuss a long technical technique :) We would like to invite him to eat in the car train restoration, but again, we are invited, impossible to invite an Iranian in his country!
Source: Best tour of Iran