Uploaded April 2025 | Updated September 2026, 2 weeks ago

---

Ever wonder why the windows on the lower floors of the Chicago Board of Trade are so big? #chicago #architecture #chicagoarchitecture

Want even more Chicago Architecture Center? Subscribe to our biweekly newsletter: architecture.org/subscribe
Still haven’t subscribed to Chicago Architecture Center? youtube.com/@ChicagoArchitecture

ABOUT THE CHICAGO ARCHITECTURE CENTER
The Chicago Architecture Center (CAC) is a non-profit organization that inspires people to discover why design matters.