Garrison Border Town of Elvas and its Fortifications

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Garrison Border Town of Elvas and its Fortifications, Military fortification complex in Alentejo, Portugal

The fortifications of Elvas include twelve forts arranged in an irregular polygon formation, utilizing the surrounding hills for strategic defense purposes.

The fortress played a critical role in securing Portuguese independence during the War of Restoration between 1641 and 1668 against Spanish forces.

The military architecture combines Dutch engineering principles with Portuguese construction methods, creating a sophisticated defense system with geometric patterns.

The Amoreira Aqueduct stretches 7 kilometers and supplied water to the garrison during long sieges through its four-tiered structure reaching 40 meters high.

The complex represents the largest bulwarked dry-ditch system in the world, with extensive military buildings adapted from former churches and monasteries.

Location: Caia, São Pedro e Alcáçova

GPS coordinates: 38.88056,-7.16333

Latest update: May 17, 2025 20:02

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