Pasadena Museum of History.
Free music, free ice cream and a free play reading of "History Lit" from Unbound Productions (starting at 2:00pm) all make this a good day to be on the Museum grounds.
They're probably not going to let you inside the Fenyes Mansion where I took this photo (yikes) three years ago. Soon, however, the refurbishment will be finished. The mansion was already glorious. Just imagine how much moreso it's going be.