The largest town in the Medoc wine region, Pauillac, located on the Gironde River, is home to three of the top five Grand Crus. The Chateau Mouton-Rothschild, Chateau Lafite-Rothschild and Chateau Latour can be visited by appointment; arrangements may be made directly through the wineries or by contacting the tourist office. From mid-July to mid-August, the tourist office offers free wine tasting one evening per week, featuring wines from 15 local chateaux.