Open House Chicago (OHC), one of the largest architecture and urban exploration festivals in the world, returns to celebrate 15 years of architecture, culture and community. This free public festival offers behind-the-scenes access to 200+ sites, including many not including many not normally open to the public. Be sure to take photos as you explore for a chance to win the OHC photo competition.

Start your day at one of our four Neighborhood Headquarters.

New this year! before you start saving sites and itineraries, and you’ll be able to access them across devices.

Live Events

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Thank you to our OHC 2025 sponsors