When Is Open House Chicago 2024. Chicago architecture center announces sites for october 19 & 20. For the 8th year, the chicago fed is opening its doors for the chicago architecture center’s signature (and free!) festival, open house chicago.

 — open house chicago, hosted by the chicago architecture center, is a free public festival providing access to places of architectural, historical, and cultural. View below all the sites that have participated in open house chicago (ohc) since 2015.