It is visible from Highway 58, on your right as you head eastbound, about 2 miles past the Keene exit. Alternatively, there is an overlook on Woodford-Tehachapi Road with a better view from above. Exit Keene and then proceed for about 3 miles.
Sather Tower it is - on the UC Berkely campus - also known as "The Campanile".
Designed by John Galen Howard, founder of the Department of Architecture. (I had to look that part up).
It is a pretty neat project: https://campanile.berkeley.edu/category/timeline/