This puzzle is part of the Monthly Topic Challenge #14: Think inside the (very small) box!.
Here are four cities, each of them in a different country. What you need to do is the following.
- Figure out the order of the cities, and put them into the grid in the right order.
- Remember where you are and extract a code from each city, replacing it by its code in the grid.
- From the codes, find a description and figure out which city does not match the description.