The only train I have taken was to go see the ruins of Machupicho.
It is a two-hour trip but the landscape is very beautiful, it is worth going that way.
I don't know anyone, since I was with a lovely person, that part of the trip was almost magical, perfect, I don't complain about anything, everything went well.
I could say I would do it again, but it won't be the same as the first time, I recommend it.
I had heard about the transiverian, but I didn't know that it could leave Portugal and reach Asia, Malaysia.
greetings
Thank you for your input!