Sentence:  A short walk, and soon we were in the train station. Well, not an entire station, but a room with Kim Il-sung's private locomotive, pulled to a stop inside the Memorial Palace. It's parked there so visitors can have a peek inside the very train car that took the Great Leader as far as West Africa on a lifelong <WSD>whistlestop tour</WSD> of fellow authoritarian regimes. 
Meaning of the word marked with <WSD> tags:  A trip by train in which one visits many locations along the way, especially if those locations are not major cities.