Chicago Architecture Center is excited to announce that Open House Chicago (OHC) 2023 will take place Saturday, October 14 and Sunday, October 15. We’re thrilled to involve over 1,000 volunteers needed to greet and assist visitors at 100+ sites throughout the city. OHC Volunteer Greeters work ONE shift either Saturday or Sunday, for 3.5-5.5 hours. As a thank you, each volunteer receives great benefits, including a Priority Access Pass which lets you skip long lines.