OlendonOlendon is a commune in the Calvados department in the Normandy region in northwestern France.Points of InterestLe menhir d'Olendon a Neolithic 2.3m Menhir that was discovered by a local farmer and now lies on its side by teh village hall.National Heritage sitesLe château d'Olendon is a chateau built in 1614 that was listed as a Monument historique in 1997.