CHICAGO
10/13/2012 02:35 pm ET

Open House Chicago 2012: 150 Sites Offering Free, Behind-The-Scenes Access (PHOTOS)

Ever wonder what that funky mansion down the street looks like on the inside? What about the corner bank that was built over a century ago? Or the city's oldest art academy?

On Saturday and Sunday, over 150 of the city's churches, museums, mansions and clubs have opened up their doors to the public -- free of charge -- as part of the Chicago Architecture Foundation's second annual Open House Chicago.

The citywide event offers a rare, behind-the-scenes look at some of the city's greatest spaces. No advance registration or reservations are required -- participants are urged to just show up.

Scroll down to peruse some of the participating sites or view the full list here.

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BEFORE YOU GO

PHOTO GALLERY
Open House Chicago 2012
CONVERSATIONS