Castelletto d'Erro
Castelletto d' Erro ( Piedmontese CASTLET d' Er) is a municipality with 146 (as of 31 December 2012) inhabitants in the province of Alessandria (AL ), Region Piedmont. In Castelletto d' Erro are vines for the Dolcetto d' Acqui, a grown red wine with DOC status. The berries of the grape varieties Pinot Noir and / or Chardonnay may be processed for sparkling wine Alta Langa.
The neighboring municipalities are Bistagno, Cartosio, Melazzo, Montechiaro d' Acqui and Ponti.
The municipality covers an area of 4 km ².