The thoughtful Dianne Feinstein tribute in SF’s City Hall

A makeshift tribute to Dianne Feinstein opened at San Francisco City Hall on Friday, just hours after her death was announced.

Feinstein, 90, died Thursday night, according to a statement from her office. Her cause of death is not yet known. Before her lengthy tenure as a California senator, Feinstein served as a San Francisco supervisor and then mayor. City Hall honored her Friday by lowering its flags to half-mast and putting out a remembrance signing station on the fourth floor south gallery, where visitors could offer thoughts on her legacy and memory.

The signing station will be open until 4 p.m. Friday, Mayor London Breed wrote on social media. SFGATE reached out to City Hall to see whether the signing station will be available beyond Friday, and will update this story when more information is provided.

Longtime political allies of Feinstein also provided laudatory statements about the former senator as news of her death spread.

“She was a historic figure, a trailblazer for women, and a great friend,” President Joe Biden said during a speech in Virginia, per NPR. “Dianne made her mark on everything from national security to the environment, to gun safety, to protecting civil liberties. The country will miss her dearly, and so will Jill and I.”

In a separate statement, California Gov. Gavin Newsom also offered kind words. “She broke down barriers and glass ceilings, but never lost her belief in the spirit of political cooperation. And she was a fighter — for the city, the state and the country she loved,” Newsom said.