I'd never really heard of Landmark. We were driving through Sonoma when we passed the Vineyard. My wife made me turn around as she "had a feeling". Boy am I glad we did.
Very casual setting with beautiful grounds. They even have a Bocce ball court.
We really enjoyed the wine, especially the Overlook Chardonnay, enought that we purchased several bottles and will certainly stop in on our next trip to the area.