To all the famous wine regions near Bordeaux you can book day trips at the tourist office, where they have a special counter for these trips. You can find tourist information at the corner next to the Quinconces square (where the Girondins fountain is).
The castles are beautiful as wel is the countryside!
Château Ausone
Chaâteau Dufort-Vivens
Château Labegorce
Château Malescot-St. Exuperie
Château Margaux
Château Palmer
Château Rauzan-Segla
Château Sénéjac (where I lived, years ago)
