I love 'this city'

I <3 *This City* is one of the extraordinary skills. You grew up in *this city*, maybe you were even born there ... or maybe you just spent 4 months working there as a taxi driver: however you gained this knowledge, you know *this city* and it's streets and alleys like the backside of your hand. (Please insert the name of the specific city between the stars/asterisks for the properly educated).
Since this character knows this city so well, they receive certain bonuses (how much is left to the master, since it depends a lot on the situation) for any and all kinds of tests, that have to do with the city: geography and politics for example, to know that one needs permit A38 and that you get that at city hall and also to know where to find city hall. Persuade/convince to get the clerks there to issue the permit by offering to kill their tiresome boss in compensation. Tactics to know where on his way to work it's easiest to get to them, social adaptation not to stand out in the crowd of morning commuters and warn the department head...