The Cheese Factory in Petaluma has been a landmark (and fun place to go) for 150 years.
This sign and the beautiful pond there stand out as you drive past in West Marin, on your way to many destinations.
In addition to the cheese shop, there is a lovely pond and picnic tables in a beautiful setting to enjoy.
For more info about the Marin French Cheese Co. (aka "The Cheese Factory") see their website:

http://www.marinfrenchcheese.com