My mind would probably be a modular city crossed with a giant clock, where everything is made out of brass, gas lamps and all that stuff.
There's a few odd things about it: Firstly each "module" swaps places with another every 5 hours, except the centre module/core, which is a huge room containing a gyroscope with a eye in the centre and a extremely tightly locked safe (Automata Guards with Halberds).
Basicly, a no so stupid analogy for ordered chaos with a dash of steampunk, tech, secrets and paranoia added.