Prentice Women’s Hospital is seen Wednesday, June 15, 2011 in Chicago. The concrete, cloverleaf-shaped building was named Wednesday, June 15, 2011 to the list of America's 11 Most Endangered ... more 
Prentice Women’s Hospital is seen Wednesday, June 15, 2011 in Chicago. The concrete, cloverleaf-shaped building was named Wednesday, June 15, 2011 to the list of America's 11 Most Endangered Historic Places by the The National Trust for Historic Preservation. It is perhaps the list's most endangered site, National Trust President Stephanie Meeks said. (AP Photo/Kiichiro Sato) less 
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Associated Press | Photo By Kiichiro Sato
Wed, Jun 15, 2011 11:37 AM EDT