If you look at the Assay Office sign at Columbia and the Assay Office sign in the attraction, they have identical lettering. There are a few other similarities in other buildings that make me think there was some inspiration in the design drawn from there specifically.
Also, I've been trying really hard to figure out what the Jupe name is and this is basically my conclusion, minor movie spoiler and then more major spoiler ahead:
One of the significant locations in the movie is a place called Jupiter's Claim. Now, I don't know for sure if this is what Jupe comes from (the word Jupiter) but it's the best bet I can gather. Below, I'm gonna give another thought I have for the attraction but this is a more major movie spoiler
One of the events that take place at Jupiter's Claim is a show where a horse gets devoured by, quote, "something." Then everyone watching the show gets killed by aliens in a spaceship. I'm thinking this could be what happens in the stop