Board Thread:Questions and Answers/@comment-26518423-20170708052630

Under Museum Achievements, I know how the other Collectors work, but Sightseeing Achievement has me stumped. The description says "Add 5 unique locomotives from international trains". I accidentally collected 1, but am unsure how I did that. It isn't shown in the Museum icon, like the others. I've even tried dispatching new locos in International.

Sorry if it's listed somewhere in the Wiki. I tried searching but didn't find a link. 