In episode 12 of Revolutionary Girl Utena, part of the chorus song for the Tenjou-Touga duel is:
Oh, dance! Your dream, three of the seven wonders of the world, carried here on the Galactic Railroad.
Now, I'm assuming that means this Galactic Railroad. I know Utena's dialog, especially the duel chorus songs, are pretty vague and cryptic, but is there some significance/obvious meaning to the reference?
Note: Not really a cross-over, but that's the closest tag I could find for cross-anime references.