I've also taken a look into Wikipedia and it says

> The city's design divides it into numbered blocks as well as sectors for specified activities, such as the Hotel Sector, the Banking Sector, and the Embassy Sector.

LOL. Perhaps they should also have a groceries sector and a parks sector (as far from the living sector as possible preferably). IMHO zoning is bullshit. I still believe in intelligent design for cities but only as long as it actually is intelligent, not just pretty-looking. Perhaps we could even use algorithms to optimize the layout.