Okay, I'll just ask it out front, what movie/book/whatever-else does this remind you of, because every person that's seen this so far has said that it reminds them of something or another.
I figured that, even if it is some futuristic society or steampunk world, there are still going to be people that are as clumsy as I am, hence having netting on the edge of the bridges and walkways. Strung directly above the bridges I imagined there would be orb-like lamps that would provide light during storms or when it's dark out for those that are in charge of mending the balloons or the rigging between domes.
Watercolor and pen and ink (again)
If I have some spare time on my hands, I want to do a nighttime version of this...heh, spare time, that's a joke right now.