A small cove that opens its beauties beyond a thick eucalypt grove, protected by a promontory that offers a spectacular view of the turquoise horizon. The Cala Sinzias beach, 15 kilometres from Villasimius and 7 from Costa Rei, is part of the territory of Castiadas. The cove is a 2-km strip of fine, soft sand, deep and very white, incredibly clear seabed that drops quickly, and crystalline waters with various blue hues, marked by Goletta Verde of Legambiente as one of the cleanest in Sardinia. The beach is dotted with a few rocks, providing the landscape with a variety typical of the eastern coast. Behind it, thick vegetation: junipers, mastics, olive trees, pine trees and eucalypts.