Frank O. Gehry, the architectural titan whose music pavilion and its accompanying serpentine-like bridge helped turn a sunken and forlorn section of Grant Park into the globally celebrated Millennium Park, died Friday.

The Canadian-born Mr. Gehry, who lived in Santa Monica, California, was 96.

“He was one of the people that will fit in the category of [Frank Lloyd] Wright, [Louis] Sullivan, [LeCorbusier] and Mies in terms of the esteem that these people are granted,” Adrian Smith, of Adrian Smith + Gordon Gill Architecture, said. Smith and Mr. Gehry worked together on Millennium Park when Smith was a designer partner at SOM.

“He was an interesting architect. And a great person,” Smith said.

Mr. Gehry’s buildings, with their fluid, often sail-like and abstract metal shapes, were unlike

See Full Page