The Open House Chicago architecture festival is set to take place on October 17 and 18, 2026, adding twenty new locations to its program. Organized by the Chicago Architecture Center, the two‑day event marks the 16th edition of the annual celebration of the city’s built environment.

Open House Chicago has grown into one of the world’s largest architecture and urban festivals, drawing visitors who wish to explore notable buildings across the city. This year’s schedule expands the offering with twenty additional sites, giving participants more opportunities to experience Chicago’s architectural diversity.

The festival’s format remains consistent with previous years, providing guided tours and open‑access opportunities at a range of structures that are typically not available to the public. By concentrating activities over a weekend, the event encourages both residents and tourists to engage with the city’s design heritage in a concentrated timeframe.

The Chicago Architecture Center, which curates the festival, emphasizes the significance of the expanded roster as a reflection of the city’s ongoing development and its commitment to public education about architecture. The inclusion of new sites underscores the festival’s role in highlighting both historic landmarks and contemporary projects that contribute to Chicago’s urban landscape.

As the 16th iteration of Open House Chicago, the October weekend will feature a mixture of well‑known landmarks and lesser‑known venues, reinforcing the festival’s reputation for providing comprehensive access to the city’s architectural assets. Organizers anticipate that the expanded program will attract a broad audience, from architecture enthusiasts to casual visitors interested in learning more about Chicago’s built environment.

The festival’s timing in mid‑October aligns with the city’s cultural calendar, offering a seasonal backdrop for attendees to explore indoor and outdoor spaces. With the addition of twenty new sites, Open House Chicago continues to solidify its position as a premier event for showcasing the city’s architectural achievements.