Fort W XV "Borek" is an armored close-defense fort that forms part of the Przemyśl Fortress. Constructed between 1892 and 1900, it features a concrete-brick-earth construction. Its location near the village of Siedliska highlights the strategic importance of this structure in the defense of Przemyśl, especially during World War I. The fort witnessed dramatic historical events; it was partially blown up in 1915 during the Second Siege of Przemyśl Fortress, underscoring its role in armed conflicts. In later years, between 1920 and 1930, the fort was partially dismantled, reflecting the gradual degradation of military structures from that era. It is also worth noting that Fort W XV "Borek" was entered into the register of monuments under number 312 on June 30, 1971, which emphasizes its historical and cultural significance. As part of the larger defensive system of the Przemyśl Fortress, the fort combines architectural value with a rich history and serves as a lasting trace of a time when military architecture played a key role in regional defense. Interestingly, despite the damage, the fort continues to attract the interest of historians and military enthusiasts, serving as a metaphor for past defensive struggles. Ultimately, Fort W XV "Borek" is not only an architectural monument but also an important reference point for research into the history of military affairs in Poland.