Try making a map with your child of the outside of your house or apartment building. It may be a bird's eye view map or, more likely, a map that shows pictures of different things.
Take paper and drawing materials outside and draw a picture of your house or apartment building. Then have your child pick a favorite landmark. Walk to that landmark and draw it on the paper and label it. Draw a line on the paper showing how you got there. Then, choose the next landmark to walk to. Do this several times until you have a map showing how to get to all your child's favorite places around the building.
Hang your drawing up in the house and use it the next time you go outside.