Fortín Romano de La Calzada de Béjar represents a rare example of Late Roman frontier defense, constructed between the 3rd and 4th centuries AD near the Vía de la Plata in Salamanca province. Built from granite with exterior dimensions of 29 by 27 meters, the fortification occupied a strategic elevated position above the Roman road, controlling movement between the Meseta and Extremadura plains. The fortress served to oversee commerce, troop movement, and cultural exchange along one of Rome's most important peninsular routes, listed in Antonino's Itinerary XXIV. Declared a Cultural Heritage site in 1931, the Fortín Romano remains a singular testament to Roman military engineering and frontier administration in Hispania.