This would be a fun 3D model for the kids to make. 3D City by Anna Paschenko | Abduzeedo Design Inspiration
I'm happy to share with you this free pack of 30 isometric city map elements created by the team at Roundicons...
INFRA Technology Group, Site © Павел Дергачев #illustration #isometric #webdesign
Isometric Map Generator on Behance
Oblivion defence by Petr Kollarcik, via Behance
Puzzle on Behance
isometric map: lots of detail but still informative