Fort of Alto do Duque
the public
The Fort of Alto do Duque is located 75 meters above sea level at the southwestern tip of the Monsanto Forest Park, in the parish of Ajuda, in Portugal's capital of Lisbon. Built at the end of the 19th century as part of Lisbon's Campo Entrincheirado (Entrenched Field) defensive ring around the city, with the intention that it, together with the Fort of Bom Sucesso, would defend against attacks along the River Tagus, the fort is now headquarters of the criminal investigation division of the Polícia de Segurança Pública (PSP) in Lisbon.[1][2][3]
Construction
Construction of the fort took place between 1875 and 1890, on land that was part of a farm owned by the Duke of Cadaval. Situated on a hill with dominant view over the downtown area of the Lisbon suburb of Algés and the Tagus, it has an irregular pentagonal shape, largely buried at the level of the land, and surrounded by a moat. The central area is covered by a dome. There is also a separate barracks building separated from the main building by the moat and connected by a bridge. The fort is officially named as “Military Building No. 31 / Lisbon.[2][4]
Uses
On 17 April 1901, it was the scene of the first wireless connection in the country, transmitting a message across the Tagus to a receiving station installed at the Fort of Trafaria, on the other bank of the Tagus, a distance of 4,300 meters. During a period of labour strikes in 1912 it was, together with several other forts, used to detain strikers.[2][5]
The fort was equipped with four 15 cm SK L/40 naval guns manufactured by Krupp.[1] Starting in 1932, a detachment trusted by the regime, known as the "Detachment of Alto do Duque Fort", was posted there. In 1936, it responded to the artillery fire of Portuguese naval vessels that revolted and tried to leave the Tagus to support the Spanish Republican cause in opposition to General Francisco Franco during the Spanish Civil War (1936-39). During the period known as the Processo Revolucionário Em Curso (Revolutionary process in progress) following the Carnation Revolution of 25 April 1974, which overthrew the authoritarian Estado Novo regime, the fort was briefly headquarters to COPCON, a military command created by the left-leaning Armed Forces Movement. This was dissolved after the failed left-wing Coup of 25 November 1975. Later it hosted the Defence Strategic Information Service (SIED), before being transferred to the PSP.[2][4]
References
- ^ a b "CEL - Forte do Alto do Duque". Monumentos de História. Retrieved 24 November 2020.
- ^ a b c d "Forte do Alto do Duque". Fortalezas.org. Retrieved 24 November 2020.
- ^ "Forte do Alto do Duque". Patrimonio Cultural. Retrieved 24 November 2020.
- ^ a b "Forte do Alto do Duque". SIPA: Sistema de Informação para o Património Arquitetónico. Retrieved 24 November 2020.
- ^ "Arquivo de etiquetas: Forte do Alto do Duque: Ainda a 1ª experiência de TSF em Portugal". História das Transmissões Militares. Retrieved 24 November 2020.
- v
- t
- e
![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Fortress_of_Almeida.jpg/170px-Fortress_of_Almeida.jpg)
Branco
- Forte de Ponte de Alvito
- Fortress of Buarcos
- Santa Catarina
- Palheiros Fort
- Estremoz
- Juromenha
- Santo António da Piedade
- Fort of Mourão
- São Luís
- Fort of Arrifana
- Santa Catarina
- São João do Arade
- Nossa Senhora da Encarnação
- Nossa Senhora da Luz
- Nossa Senhora da Penha de França
- Cavaleiros de Santiago
- São Sebastião de Castro Marim
- Fort of Sagres
- Nossa Senhora da Guia
- São Roque
- São Vicente
- Santo António de Tavira
- São João da Barra
- Vera Cruz
- Burgau Fort
- Santo António de Belixe
- Nossa Senhora da Rocha
- São Francisco
- Nossa Senhora da Consolação
- São João Baptista das Berlengas
- São Miguel Arcanjo
- São Vicente
- Bom Sucesso
- Santo António da Barra
- São Lourenço do Bugio
- Nossa Senhora da Luz
- Fort of Guincho
- Nossa Senhora da Guia
- Santa Susana
- São João das Maias
- São Bruno
- Nossa Senhora de Porto Salvo
- São Pedro de Milreu
- Nossa Senhora dos Anjos
- Nossa Senhora das Mercês
- Fort of Sacavém
- São Jorge
- São Julião da Barra
- São Pedro do Estoril
- São Teodósio
- Santa Marta
- Santo Amaro
- Nossa Senhora da Natividade
- Santa Apolónia
- São Brás de Sanxete
- Fort of Cresmina
Lines of Torres Vedras | |
---|---|
Campo Entrincheirado |
|
Castelo
- Areosa Fort
- Fort of Cão
- Nossa Senhora da Ínsua
- Fort of Lagarteira
- Montedor Fort
- Monção
- Santiago da Barra
- São Francisco de Lovelhe
- Valença
- Fort of the Açougue (Terceira)
- Fort of the Cavalas (Terceira)
- Fort of the Church of São Mateus da Calheta (Terceira)
- Fort of Cinco Ribeiras (Terceira)
- Espírito Santo (Terceira)
- Fort of the Caninas (Terceira)
- Nossa Senhora da Guia (Faial)
- Fort of Greta (Terceira)
- Fort of Má Ferramenta (Terceira)
- Fort of the Maré (Terceira)
- Military Battery of Espalamaca (Faial)
- Fort of Negrito (Terceira)
- Dois Paus redoubt (Terceira)
- São João Baptista (Terceira)
- Reducto da Salga (Terceira)
- Três Paus redoubt (Terceira)
- Forte da Salga (Terceira)
- Santa Catarina das Mós (Terceira)
- Santa Cruz (Faial)
- Santo António (Terceira)
- Santo António do Monte Brasil (Terceira)
- São Brás (Santa Maria)
- São Fernando (Terceira)
- São Francisco (Terceira)
- São João (Terceira)
- São João Baptista (Santa Maria)
- São Mateus da Calheta (Terceira)
- São Sebastião (Terceira)
- Forte do Terreiro (Terceira)
- Zimbreiro Fort (Terceira)
- São João Baptista (Pico)
- Nossa Senhora do Amparo (Madeira)
- São José (Porto Santo)
- São Lourenço (Madeira)
- São Tiago (Madeira)