I agree with Dario, the brush flower, if you look close, the stamens (fuzz) are coming out of fairly large (looks like over 1/2 inch) cups. The cups holding the flower is characteristic of Eucalyptus. The are common in California urban landscapes and reforestation projects. They were tried in reforestation projects, but their use was discontinued maybe 20 years ago, when it was realized how invasive some species can be.
Most Callistemon are shrubs, rare to get very tall. This looks like a young tall tree that can get quite a bit taller, again pointing to Eucalyptus.
I could be wrong, I don't see Eucalyptus every day. Anyone from Australia on this forum?
The twigs image really reminds me of Eucalyptus citrodora. Which I believe is a member of a sub-genera of Eucalyptus that has now been elevated to full genus status, so when checking on-line sources this name will be an old now invalid name.
Most Eucalyptus have an exfoliating papery, shredding bark like younger birch trees. The handful of Callistemon I've seen, all had bark plates, more like oak or old pear, rather than paper like flakes and shreds.