Oh what a fool I was...
I realized when I posted that last picture of the Firehouse that I had gone through all the trouble of building a subterranean level for the Ghostbusters, and I hadn't done anything to make it look like their actual basement. So I tore the sewer apart and rebuilt it with all the trimmings: a containment unit, warning lights, an electrical box, and stairs that actually ascend up into the Firehouse. And the grid up above makes for some nice light effects on the tan wall.
The larger sewer still continues on and connects with the other playsets.
Oh what a fool I was...
I realized when I posted that last picture of the Firehouse that I had gone through all the trouble of building a subterranean level for the Ghostbusters, and I hadn't done anything to make it look like their actual basement. So I tore the sewer apart and rebuilt it with all the trimmings: a containment unit, warning lights, an electrical box, and stairs that actually ascend up into the Firehouse. And the grid up above makes for some nice light effects on the tan wall.
The larger sewer still continues on and connects with the other playsets.