Royal Fortress of the Concepcion, 18th-century military fortress in Aldea del Obispo, Spain
The Royal Fortress of the Concepcion is an 18th-century military stronghold in Aldea del Obispo featuring a distinctive star shape with pentagon bastions and reinforced earthwork defenses. It sits near the Spanish-Portuguese border facing the fortress of Almeida across the frontier.
French military engineer Simon Jocquet designed and built this fortress starting in 1663 as a strategic border defense for the Spanish crown. The stronghold was sized to house approximately 1,500 infantrymen and 200 cavalry soldiers.
The fortress takes its name from the Feast Day of the Immaculate Conception, the date when its construction began, reflecting the deep Catholic influence on Spanish military design. This religious connection shaped how the stronghold was conceived and built.
The fortress welcomes visitors year-round and offers guided tours through its historical spaces. Reduced rates apply to children, students, and senior citizens, making it accessible to different age groups.
The fortress underwent major renovations and now operates as a luxury hotel while keeping its original architectural character intact. Guests can stay within the bastions themselves, experiencing the building as both a historical site and a modern lodging.
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