JS 91-92, WS 88-91 Located in the south of the Margaux appellation on a plateau made up of gravelly outcrops, Château Siran possesses a superb terroir conducive to the production of some of the greatest wines. Having been in the hands of the same family since 1859, the running of the château was taken on in 2007 by Edouard Miailhe, a fifth-generation member of the family.