Yorba Linda is a city without much of what is considered "city". One feels close to the beauty of nature here, unlike what one sees in truly the most city of cities. Head east and north in YL and take in the lovely rugged hill views by Carbon Canyon Park and Chino Hills Park. (Chino Hills is a neighboring suburb that is equal to the charm of YL.
Here's a picture of Richard Nixon's birthplace. The house has been restored on the exact spot where President Nixon's father built it back in 1912.