Bateria Alta ao norte da Praia da Água Doce
A ruined 18th-century coastal artillery battery in Cascais, Portugal, classified as a public-interest property in 1977.
Last updated September 28, 2026
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Overview
The Bateria Alta ao norte da Praia da Água Doce (High Battery North of Água Doce Beach) is a ruined coastal artillery fortification in the parish and municipality of Cascais, Lisbon District, Portugal. It occupies a commanding position north of Água Doce beach, at approximately 38°43′42″N, 9°28′34″W, between the Atlantic Ocean and the western side of the Hotel do Guincho. The structure is classified as a property of public interest by a 1977 decree, but today only traces of its walls remain, identifiable in the landscape. It is not an active commercial brand, company, or product; it is a heritage monument. The only commercial entity associated with the site in the supplied evidence is the Fortaleza do Guincho hotel, a five-star boutique hotel and Relais & Châteaux member located nearby, which is a separate brand and not the subject of this dossier.
History
The Bateria Alta ao norte da Praia da Água Doce is a coastal artillery battery built in a dominant position north of Água Doce beach, in the parish and municipality of Cascais, Lisbon District, Portugal. Its exact construction date is not provided in the available evidence, but it is a historical military structure. By decree in 1977, it was classified as a property of public interest (Imóvel de Interesse Público). At present, the battery lies in ruins, with only traces of its walls remaining, identifiable between the Atlantic Ocean and the western side of the Hotel do Guincho. The site is listed in the Inventário do Património Arquitectónico (DGEMN) and referenced by the Instituto Português de Arqueologia. It is not a commercial brand or business; it is a heritage monument.
- 1977
Classified as a property of public interest by decree.
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