Have you ever stumbled across these round shiny (or dirty) pieces in the sidewalk and wondered what they were for? We have been collaborating with artist Yun Gao on civil engineering and urban planning related graphic stories for the fall. Below is our first post exploring the familiar glass pebble sidewalks below your feet.





Photo credits:
1. https://glassian.org/Prism/Gallery/NewYork/1900.html 2. https://glassian.org/Prism/BrownBros/hyatt_patent_basement_extension.gif
3. glassian.org
4. https://glassian.org/Prism/Badger/plate_lxxxiii_sidewalk_vault.jpg
5. https://sohobroadway.org/let-there-be-light-the-vaulted-sidewalks-of-soho-broadway/