Image from buenavistacarneros.com
A 19th century stone building houses the winery (except for the more modern visitors' center). They used to offer public tours, but I can't tell if they still do from their website.
Image from gocalifornia.about.com
Several wineries try to emulate a French chateau--Domain Carneros does it best.
Image from darioush.com
Image from ferrari-carano.com
Amazing grounds. They must keep an army of maintenance people busy.
A naturally beautiful corner of Bennett Valley (you'll have to look that up on a map) with nice landscaping and their famous lavendar gardens.