El Castillo — Immaculate Conception Fortress

The story behind the place

The Fortress of the Immaculate Conception stands at El Castillo above the San Juan River. Built during the Spanish colonial period in the seventeenth century, it was intended to defend the river route between the Caribbean and inland Nicaragua. Its heavy walls and elevated position reveal that strategic purpose. Today the fortress also contains a museum, allowing its military architecture to be considered alongside the history of the people and conflicts around it.

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