Visitors walk through the ornate entrance of a historic Chicago building during Open House weekend

Every Year in Chicagoland

Open House Chicago is October 17 and 18. How to use the free weekend

How to plan Open House Chicago: navigate 200+ sites, understand special rules, and make the most of the free weekend.

By HellginOctober 8, 20268 min read

You've walked past a lobby door on LaSalle, or an old theater marquee on Broadway, and wondered what it looks like inside. On Saturday, October 17, and Sunday, October 18, a lot of those doors open. Open House Chicago is free. You don't need a festival ticket or advance registration for most places. You show up while a building is open and walk in. You still need a plan, though. More than 200 sites take part, and each one sets its own hours.

The weekend is free, and you don't need a festival ticket

The Chicago Architecture Center has run Open House Chicago since 2011. This is the 16th year. The Center calls it a free public event with behind-the-scenes access to more than 200 sites, and many of them aren't usually open to the public. They're spread over more than 30 neighborhoods.

There's no wristband and no festival-wide ticket. For ordinary sites you don't register ahead of time. You pick places, check when each one is open, and go during those hours. That's how WTTW, the Sun-Times and the Tribune all describe it.

Because it's free, it's easy to just wing it, and the size of the festival is where that goes wrong. Some buildings are open 10 a.m. to 5 p.m. both days. Others are open a few hours on one day only. In its October 7 guide, the Tribune advised leaving time to travel and not expecting to see most of the list in one weekend. Families are welcome, and many sites take all ages. If a site has an age limit, it's on that site's page.

Chicago's Open House is part of Open House Worldwide, a network that started in London in 1992 and reached the U.S. through Open House New York in 2002.

Pick a neighborhood and the one-day sites first

Plan at openhousechicago.org, and log in before you save anything. The sign-in email has a link that works once and expires after 24 hours. Your saved sites only show up on another device if you were logged in when you saved them, so use the same email on your phone and your laptop.

Next, look at the two lists that limit your choices:

Saturday Only covers about three dozen sites that are open only October 17. They include the Cadillac Palace Theatre (151 W. Randolph St.), House of Blues (329 N. Dearborn St.), the Cliff Dwellers Club (200 S. Michigan Ave., Suite 2200), Illinois Tech's S.R. Crown Hall (3360 S. State St.), Chicago Magic Lounge (5050 N. Clark St.) and Oak Woods Cemetery (1035 E. 67th St.), which is new this year and a good October walk.
Sunday Only has 10 sites, open only October 18: Chicago Loop Synagogue, Colvin House, Electrical Audio, FarmZero, the International Museum of Surgical Science, the Harris Theater, KAM Isaiah Israel, The Moody Church, The Roof Crop and the Woman's Athletic Club of Chicago.

Choose your one-day sites first, then add sites nearby that are open both days. Downtown has the most, with 36 sites. Garfield Park/North Lawndale has 14, the Near North and Near West sides have 13 each, and Bronzeville/Kenwood and Hyde Park have 10 each. In Woodlawn, a new grouping called "Built on Belief" connects Narrow Bridge Arts Club, First Presbyterian Church (6400 S. Kimbark Ave.) and Oak Woods.

Before you go, check the "New Sites for 2026" itinerary. Some of the newcomers announced in September have since been canceled.

If you'd rather not plan on your phone, you have paper options. The Chicago Reader's October issue has a festival guide, a site list and a bingo card. The Center downtown has printed lists, and you can print listings from the website. The Center also has an app for Apple and Android.

Read the site page, because a few places work differently

Every building sets its own hours. The Chicago Board of Trade (141 W. Jackson Blvd.) is open 10 to 5 both days. Goettsch Partners (224 S. Michigan, 17th floor) is open only Saturday, 10 to 2. Avondale Bowl is open noon to 5 Saturday and noon to 3 Sunday, and if you step onto the wood approaches, they'll ask you to borrow bowling shoes.

A few places have extra rules:

Griffin Museum of Science and Industry is the main place where you can't just walk in. Its Open House hours are Sunday, 10 a.m. to 4 p.m. Free admission that day requires a reserved ticket using the code OPENHOUSE, and the listing strongly encourages reserving. On Saturday the museum is open with paid admission, and code OHC20 takes 20 percent off general admission. Separately, the museum's own calendar lists October 18 as an Illinois resident free day, with proof of residency through its ZIP-code ticket portal. Free general admission doesn't include the Giant Dome Theater or special experiences. On free days the Coal Mine costs $12 for adults, and the U-505 on-board tour costs $18.
Chicago Magic Lounge is for ages 16 and up, Saturday only, 10 a.m. to 4:30 p.m. You enter through the laundry-facade door. It's a small-group architecture and history tour, and there's no magic show.
No photos at the Federal Reserve Bank of Chicago (230 S. LaSalle St.), where entry ends at 4:30 p.m. The visit includes the Great Hall, which usually isn't open, plus the Money Museum. Uptown Theatre doesn't allow photos either, and you see it on a short guided tour of the auditorium.
Guided tours only at Casa Bonita (7340 N. Ridge Blvd.), where tours are mandatory. At Goettsch Partners, expect a short wait for the next guide.
ID checks at KOVAL Distillery if you want a spirit tasting.

Sites sometimes cancel, so check the website again during the weekend. The festival also goes on rain or shine. It's October in Chicago, so bring a jacket. If severe weather hits, updates go on the festival website and the Center's social media.

Getting between sites, and whether skipping the line is worth paying for

The Center recommends CTA buses and trains plus Divvy bikes. Many sites are close enough to walk between, and Metra reaches places the CTA doesn't. Some neighborhoods have free or metered street parking. CTA sponsors the festival, but no extra service has been announced.

Four neighborhood headquarters have restrooms, free wi-fi and Center staff:

the Chicago Architecture Center, 111 E. Wacker Dr.
Ramova Theatre in Bridgeport
KOVAL Distillery, 4241 N. Ravenswood Ave.
Starling by Duo, 3243 W. 16th St.

Lines are the hidden cost of a free weekend. The Tribune said Electrical Audio drew some of the longest lines in the festival's history when it debuted in 2025, and it's open Sunday only again this year. The only way to skip lines is a Priority Access Pass, which you get with a CAC membership or by volunteering. Membership prices as of October 7 are $75 a year for one adult, $125 for two adults, and $180 for a family (two adults and up to four kids under 18). Students and educators with ID get 15 percent off by calling 312.922.8687. Your digital membership card turns into the pass the week before the festival. Volunteer greeters work one shift of 3.5 to 5.5 hours and get the pass by email. Questions about volunteering go to ohcvolunteers@architecture.org.

What a visit is like, and the photo contest if you want to enter

At most sites, a volunteer greets you and you either look around on your own or join a short tour of the rooms that are open. You can usually take photos unless the site says otherwise.

This year's photo competition theme is Chicago's neighborhoods. The rules:

Photos must be taken October 17 or 18 at an official 2026 site.
You can submit up to three photos.
The deadline is October 30 at 11:59 p.m. CDT.
Files must be full-resolution JPG, TIFF or HEIC, 10 MB or smaller.
No selfies, and no AI edits that add, remove or replace anything.
Anyone recognizable in your photo needs to have agreed to it.

Six winners will be printed for display at the Center and will get a free annual membership. You should hear by November 30, just after Thanksgiving.

Sources (27)

Photo by juergen-polle on Pixabay.