My son is also obsessed with geography. He loves "How the states got their shapes" which is a History channel show based on a book by the same name.

Another book he loves is "Lost States" about proposed states that never came into being.

We also have board games called GeoDice and 10 Days in Europe which are fun and challenging.

Mom to 2 kiddos - DS 9 with SPD and visual processing issues and DD 6 who is NT