My wife and I did this several years back, New York to Chicago to San Francisco, and it really was a wonderful experience. But get a sleeper compartment, don't sit with the cattle. It's worth it, really. And that's even though we spent little time in our compartment almost the whole trip we were up in the observation car watching the American landscape roll by. One highlight of the trip was when storms over Helper, U…
I’ve done Shanghai to Urumqi before in a hard sleeper. I don’t think I really saw much outside (no observation car, monotonous farming fields), but the people on the train were really interesting (eg Pakistani traders using the train to get back home).
China rail have pretty bad hygiene at that time. The passengers freely throw their trash on the floor and out of the window. The attendants swiped the floor every few hours. Every time they pushed a mountain of peanut husk away. There was a peasant family on board with a baby. The baby needed to relief. So the parents held him up to have him shit on the floor. The attendant saw it and really lost it. She scolded the hell out of the family.