This is exactly the opposite of mapping your hometown : https://www.cartographersguild.com/s...ad.php?t=43507

You chose an area you know little about.
It can be of any style and any era but it has to a real place.
It can be a country, a city, a building.
It does not have to be on Earth, as long as it's a ''place''.

It doesn't have to be perfectly accurate but need some resemblance.