While Oscar-winning actor Diane Keaton was best known for roles in Woody Allen movies and the Godfather saga, she was also a vigorous defender of historic buildings.

People magazine reported Saturday that she passed away at the age of 79.

Keaton had served on the board of the Los Angeles Conservancy and as a trustee of the National Trust for Historic Preservation.

Her activism included efforts to save the Ennis House , an iconic 1920s residence in the Hollywood Hills that was designed by the famed architect Frank Lloyd Wright.

The Northridge earthquake in 1994 and heavy rains a decade later caused significant damage. The National Trust for Historic Preservation placed the house on its 2005 list of America’s 11 Most Endangered Historic Places.

It was partially restored by the non

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