Starcastle: Under The Sea Coach Playset (Trendmasters, 90s)

Starcastle was a series of playset toys, that focused more on the buildings rather than the figures! 
It was pretty obvious, which popular toy-line they were trying to rival, but they failed; still, the sets are adorable, and managed to find a spot in the heart of many kids. 

This is one of the small sets, that essentially an accessory to the bigger castles; you know, for poor kids! 
These though, the joke's on the rich kids back then, because the smaller the set, the harder it is to find = often more valuable.