Here's the latest of a series on train travel from the NY Times -
5 Train Routes That Highlight the Beauty of Europe
two other, recent articles
5 Stunning German Train Trips at a Bargain Price
https://community.ricksteves.com/travel-forum/germany/5-stunning-german-train-trips-at-a-bargain-price
&
The Most Luxurious Train in the World
https://community.ricksteves.com/travel-forum/beyond-europe/the-most-luxurious-train-in-the-world