I love how the map graphics and colour coding have been used to create this funky cover. As you can see it's a Paris Metro & Autobus map
Inside it has 3 maps; a metro map of the full region...
... an Autobus map of the central city...
... and a night Autobus map, again of the inner city area...
I also really like the unexpected use of the script font (used to mark the different areas within the city) it's a pleasant surprise.
All-in-all a nice little addition to the reference box. Have a delve in the box yourself here
for a little Friday inspiration.