This certainly is a matter of personal taste. It's probably more common to use the category or free space mentioned earlier. (I agree the free space might be the simpliest.)
If you like the appearance of the maps INSIDE the biography better, they can actually be embedded into his biography..... It's a simple thing to learn to do. I took the liberty of embedding the map you have already posted. Please remove my changes..... they were just intended to demonstrate the way it would look. Instructions to do this are available on the map image you posted, open the image and scroll down toward the bottom right side to see what to cut and paste into the biography for the image to appear. You have the option of small, medium, large images and centered or shifted right or shifted left.
If you find some really great maps you might enjoy having them in the biography.