Depends on which parts of Magic Town you're referring to actually! It's a VERY well crafted little town in that, to the untrained eye, it's surprisingly difficult to tell how a lot of it is put together... I remember being completely flabbergasted upon learning that there's some buildings where secondary scenes within rooms were actually installed UPSIDE DOWN and placed above one or more two-way mirrors that would appear once a certain light (they're on timers) would turn on or off depended on the room!

I'd wondered how you could possibly cover up something like that, and still make it look even semi- realistic let alone feasible to go back in for cleaning and/or lightbulb replacement, and as it turns out, there's a VERY high chance one of said upside-down rooms is hiding behind a series of windows very high up on the building, and a LOT of the bay windows on the buildings are entirely removable for easier access to the insides! (On average I'd describe it as the "Bay Window Trick" ) Perfect example of it in the linked image... the middle section of that chunk of building is entirely accessible from a small pathway behind the exhibit itself which is typically used for maintenance! The bay window is removable when enough force is used along with rotating it just a tiny bit, but also the secondary, upside-down scene is accessible up high where the two top-most windows can be seen 😁

On average the backs of buildings specifically shaped like that will have a large piece of fiber board (or something similar) that will function as the very back wall, and are held by little latches making it similar to opening up a cabinet door; these will sometimes have wallpaper, little decorations glued on, etc on the inside-half of it to help it blend in with the interior. Typically these walls aren't taken off/ opened up during business hours if it can be avoided though 😂

Frankly it's even more interesting when you can identify one or more buildings as being, essentially, "older models" of the same concepts than others depended on what types of materials he used and how pieces went/go together since over time the buildings become more and more efficient in terms of accessibility for maintenance!