Yes, it's another round of that classic guessing game - Animal, Vegetable, Mineral, Abstract [or any combination thereof]. This effort - '03/'04 should address any queries, but then again, may just serve to confuse and baffle which some might say is the point of the game. Patience, integrity and a decent search engine may be useful ....
Physical representation? I think "physical incarnation" might be a better phrase. In the M&V sense, the AOTC is very definitely real. Indeed, perhaps it is a mistake to call it Abstract; I think what I really mean is that the AOTC is a human construct.
Doll house? No. City? Yes! *sustained applause* Motorway? No. Single person in charge? Well, it's a city. Do cities have a single person in charge of them? Depends on how you interpret "in charge", I suppose. Wikipedia does inform me that the person nominally in charge of this particular city holds an "uncommon office".