I traveled to Sacramento recently with my mother to vist my uncle (81 this year, and still taking care of his house and garden).
I was able to figure out that the white-, pink-, and rose-flowered shrubs growing all over town were oleanders.
What's puzzling me are the shrubs/trees growing in huge planters in front of the Train Museum in Old Sacramento. These were limbed up quite high (to better to show off their attractive, mottled bark, I presume), had somewhat glossy, elliptic leaves, pink flowers clustered at the end of the branch, and seemed to be the only possible source of a distinct, pleasant, flowery scent (which was something like linden flowers or Cashmere Bouquet soap).
Based on the bark, especially, I thought they might be crape myrtles. But fter Googling around, it seems that main opinion is that scented crape myrtles are somewhat mythological.
No picks, sorry, and no detail description of the flowers and leaf set. (Yes, my bad, but it was very hot and sunny, and, as I said, these were set in huge planters and limbed up, so they were way over my head. And no pictures, as I didn't have a camera.)
I must add, I am quite sensitive to odors, so it may have been a fairly subtle scent. (Paper-white narcissus and privet flowers are intense and unpleasant scents to me, and Bradford pears flowers are so intensely stinky that I can't imagine why anyone would plant them ANYWHERE.)