Not as impressive, but there used to be two stations in Seoul's circular subway line 2, named Sinchon and Sincheon, on the opposite corner of Seoul. In older Romanization scheme it was worse: Shinch'on vs. Shinch'ŏn. (I guess it didn't help that they sound almost identical to an untrained English speaker.)
Sadly (for me), they renamed one station, so they aren't confusing any more. Boo.
The NYC subway frequently has multiple stops with the same name, e.g. “23 St” (at Lexington Av, Broadway, 6 Av and 8th Av). That’s not always a big problem in Manhattan, because they’re relatively close. But it gets more interesting when you try to get to DeKalb (L) towards the extreme north end of Brooklyn, while DeKalb (BQR) in downtown Brooklyn is the one people know.
Philadelphia only has two subway lines but still has this problem because they run roughly parallel, about a mile and a half apart, for a bit. As a result both lines have stops called "Spring Garden" and "Girard" named after streets that intersect both lines.
I had this issue meeting up with a friend when I was visiting Tokyo, turns out Akebanebashi and Akebonobashi are similar sounding metro station names and can lead to a lot of confusion :-)
The Chicago “El” subway system has three stations named “Chicago”. None are in the downtown core. I always wonder about tourists hopping on the Blue line at O’Hare and where they end up.
Oh yeah, that reminds me of a bus line in Daejeon that had these three consecutive stops:
West Daejeon Intersection Station (seo-daejeon-negeori-yeok)
West Daejeon Intersection (seo-daejeon-negeori)
West Daejeon Station Intersection (seo-daejeon-yeok-negeori)
...at least they should be within walking distance.
Sadly (for me), they renamed one station, so they aren't confusing any more. Boo.