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Tickets are on sale for the once-a-year opportunity to explore the interiors of some of Oak Park`s most architecturally famous and otherwise interesting old houses.

Among them are the Frank Lloyd Wright Home and Studio and 10 other residences designed by Wright, George W. Maher, Tallmadge & Watson, and architects working in Prairie, Victorian and other styles.

The ”Wright Plus” tour date is May 18 and the ticket price is $25, which includes admission to the 11 structures, shuttle bus service, a map and parking and dining imformation.

Information and ticket purchases by credit card are available by calling 708-848-1500. Proceeds go to the Frank Lloyd Wright Home and Studio Foundation.