Visitors explored the towering Aon Center with breathtaking views downtown during Open House Chicago on Saturday, October 17, 2015.
Photograph: Andrew Nawrocki
Photograph: Andrew Nawrocki

Photos from Open House Chicago

We explored some of the most stunning and iconic downtown sites, added to this year's Open House Chicago roster

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Chicago is known for its architecture, and the annual Open House Chicago two-day event is known for giving us behind-the-scenes access to more than 200 significant sites across the city. Last year we captured the best sites in Bronzeville, a newly added neighborhood. But when the sprawling roster added historic hotels, modern spaces and decadent theaters to its downtown list this year, we knew we had to take a peek (and tons of shots). Here are some of the most stunning new sites we explored on Saturday.

RECOMMENDED: Our complete guide to Open House Chicago

Open House Chicago let us see inside the former Tokyo Hotel, now Freehand Chicago, on Saturday, October 17, 2015. The space has been transformed into a trendy hotel and hostel. 

Open House Chicago let us see inside the former Tokyo Hotel, now Freehand Chicago, on Saturday, October 17, 2015. The space has been transformed into a trendy hotel and hostel. 
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Open House Chicago let us see inside the former Tokyo Hotel, now Freehand Chicago, on Saturday, October 17, 2015. The space has been transformed into a trendy hotel and hostel. 

Visitors explored the luscious interior of the old Medinah Athletic Club, now InterContinental Chicago, downtown during Open House Chicago on Saturday, October 17, 2015.
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Visitors explored the luscious interior of the old Medinah Athletic Club, now InterContinental Chicago downtown during Open House Chicago on Saturday, October 17, 2015.

Visitors explored the luscious interior of the old Medinah Athletic Club, now InterContinental Chicago downtown during Open House Chicago on Saturday, October 17, 2015. 
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Visitors explored the luscious interior of the old Medinah Athletic Club, now InterContinental Chicago downtown during Open House Chicago on Saturday, October 17, 2015. 

Visitors explored the innovative and modern GEMS World Academy downtown during Open House Chicago on Saturday, October 17, 2015.
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Visitors explored the innovative and modern GEMS World Academy downtown during Open House Chicago on Saturday, October 17, 2015. 

Visitors explored the innovative and modern GEMS World Academy downtown during Open House Chicago on Saturday, October 17, 2015. 
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Visitors explored the innovative and modern GEMS World Academy downtown during Open House Chicago on Saturday, October 17, 2015. 

Visitors explored the towering Aon Center with breathtaking views downtown during Open House Chicago on Saturday, October 17, 2015. 
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Visitors explored the towering Aon Center with breathtaking views downtown during Open House Chicago on Saturday, October 17, 2015. 

Visitors explored the towering Aon Center with breathtaking views downtown during Open House Chicago on Saturday, October 17, 2015. 
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Open House Chicago attendees also got to see inside Seventeenth Church of Christ, Scientist on October 17, 2015. The seven-story structure on the Chicago River has an auditorium styled after a Greek amphitheater, in addition to many other beautiful features.

Open House Chicago attendees also got to see inside Seventeenth Church of Christ, Scientist on October 17, 2015. The seven-story structure on the Chicago River has an auditorium styled after a Greek amphitheater, in addition to many other beautiful features.
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Visitors on October 17, 2015 took a tour of the W Chicago Hotel City Center, a Beaux-Arts building that was updated by W Hotels in 2001.

Visitors on October 17, 2015 took a tour of the W Chicago Hotel City Center, a Beaux-Arts building that was updated by W Hotels in 2001.
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Visitors explored the ornate interior of the Congress Plaza Hotel downtown during Open House Chicago on Saturday, October 17, 2015.

Visitors explored the ornate interior of the Congress Plaza Hotel downtown during Open House Chicago on Saturday, October 17, 2015.
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Visitors explored the ornate interior of the Congress Plaza Hotel downtown during Open House Chicago on Saturday, October 17, 2015.

Visitors explored the ornate interior of the Congress Plaza Hotel downtown during Open House Chicago on Saturday, October 17, 2015.
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Visitors explored the dramatic design of the Illinois Institute of Technology, Chicago-Kent College of Law downtown during Open House Chicago on Saturday, October 17, 2015.

Visitors explored the dramatic design of the Illinois Institute of Technology, Chicago-Kent College of Law downtown during Open House Chicago on Saturday, October 17, 2015. 
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