Map Grid

[BenSCR]

How can I make a 'Circular Grid, like this grid over a Map.

[Monika Gause]

Using the radial grid tool you can create this.

[Omar.Fathy · Accepted solution]

You can use the radial grid tool as Monika Said with editing it's options to get the shape you need by selecting the tool and double click anywhere. Then you can edit the stroke.
You can also make it manually by using the Transform again command.