OK, a couple of unmissables (I like that word): The Monterey Acquarium, stop for a coffee and view at the Nepenthe Inn, the waterfall overlook at Julia Pheiffer State Beach -- it is only about 1/4 mile walk about 1/3 of mile north of the Burns Creek Bridge -- the water in this slender waterfall falls directly into the surf -- very cool! The elephant seal viewing area at Piedras Blancas, the old station house (still a bar) in Cayucos, just about anywhere in Death Valley -- but be sure to take the Twenty Mule Team Canyon Drive! Be sure to go to the lobby of the Furnace Creek Inn -- very elegant.
Well, that is a start!
Happy Planning!
Mark