I love Murder on the Orient Express.
I have read the book more than once, seen the 1974 movie starring Albert Finney as Hercule Poirot, seen the 2017 movie starring Kenneth Branagh as the same character, and in my own travels I have stalked the train (or what's left of it) itself. In the early 20th century the Orient Express carried the well-heeled of Europe from Paris to Istanbul in high style. Today, the Venice Simplon-Orient Express now owned by Belmond, takes well-heeled tourists from London to Venice in nostalgic Art Deco luxury.