
Pagogaña Fort is a Second Carlist War fortification in Irun, Guipúzcoa, featuring a distinctive cross-shaped plan with an octagonal tower at its center and four wings of loopholed structures. Originally equipped with a double circuit of walls and exterior moat, the fort included a tunnel exceeding 400 meters in length that served as an escape route for soldiers during critical situations. Now in progressive ruins but accessible to visitors with appropriate precautions, the fort was acquired by the municipality of Irun in 1977 and has been developed as a recreational space offering views of the surrounding landscape.