Hinsdale, Illinois.

"The vulnerability of this significant work of an architect of recognized international importance demonstrates the precarious status of historic structures in affluent areas," said the Frank Lloyd Wright Building Conservancy in a statement. "The Bagley House is a vital part of Wright’s canon and its loss would be tragic for the Wright community, historians, and architecture lovers everywhere. This house needs a sensitive preservation-minded buyer who will purchase and legally protect the building for the future."