99% Invisible City

From the creators of the wildly popular 99% Invisible podcast, comes a guidebook to the unnoticed yet essential elements of our cities. Narrated by Roman Mars, with a bonus Q&A and a Full Episode of 99% Invisible. 

Have you ever wondered what those bright, squiggly graffiti marks on the sidewalk mean?

Or stopped to consider why you don't see metal fire escapes on new buildings?

Or pondered the story ...