Fort of Santo António da Barra, 16th century coastal fortress in São João do Estoril, Portugal.
Forte de Santo António da Barra is a coastal fortress from the late 16th century near Cascais, Portugal, built with an irregular star-shaped layout and two outer bulwarks. Inside, vaulted barracks surround a central building that contains a small chapel.
The fortress was built in 1590 by military engineer Giovanni Casale on the orders of Philip II of Spain to guard the Tagus estuary against English and Dutch attacks. It formed part of a wider coastal defense network put in place during a period of intense naval conflict.
The fort takes its name from Saint Anthony, the patron saint of Portugal, to whom the chapel inside is dedicated. Visitors can step into this small chapel and see how religious life was woven into the daily routine of a coastal military post.
The fort is open on weekends and public holidays, and staff on site can help with orientation around the different areas. Some surfaces inside and outside are uneven, so sturdy footwear is a good idea.
From 1945 to 1968, Portuguese Prime Minister António de Oliveira Salazar used this fort as his summer residence. It was within these walls that he suffered a stroke that ended his time in power and changed the course of Portuguese politics.
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