Okay, no, admittedly: while Kandor has been mentioned on the show, this isn't it. This isn't even a tiny city. It's the work of Enoki Chu, entitled "RPM-1200". It apparently stands eleven feet tall and is fifteen feet in diameter. It's also made up entirely of junk metal. It's like an environmentally friendly scale model of Coruscant, I guess you could say.
We do say that if they ever do show the bottled city of Kandor on the show, I think this would do the trick. And if you say "Kandor shouldn't be that big," I shrug to you and say, "Urban sprawl."