"
Iran is opening its doors to foreigners and a train ride from the Persian Gulf to the Caspian Sea is a great way to get to know the country and its people."
-- [
www.youtube.com] -- May 12, 2017
Also --
Rick Steves' Iran [55m 44s] -- [
www.youtube.com] -- Trains? Well, there's a 16-second segment about Tehran's subway at 4:10