Question Fog in Distance - possible?

I have a house with land on a terrain area. How can I make the easiest way that there is a Fog around the terrain edges where the player cannot see through? Because I want the player to only be able to walk around on his property. to the side you can still see a few neighboring properties (that current not exist), But outside the house nad the neighboring properties should be a mist that covers the edges of the terrain on the image!

(I use Unity 2020.1.3f1, if there are now even easier options with the newer versions for side)

 

Open the lighting window and scroll to the bottom.
There are settings for distance fog there.