Fort W I "Salis Soglio" is a single-rampart artillery fort of the Przemyśl Fortress, built between 1882 and 1886 according to the design of Swiss engineer Daniel Salis-Soglio. Initially intended to be an armored fort, budget cuts halted the purchase of armor plates, prompting designers to add additional artillery positions. As part of the "Siedliska Group," the fort played a key role during the first and second sieges of the Przemyśl Fortress, supporting defensive operations. The fort's name honors its creator, who was responsible for the construction of the fortifications. Architecturally, it is distinguished by centrally located barracks, a three-courtyard structure, and a protected entrance via a brick gate, which, unlike other forts of this type, was not removed after the 1896 maneuvers. The fort was secured by a dry moat with caponiers, providing additional defense. Today, it is one of the best-preserved elements of the fortress, open to visitors, with its original entrance gate, remains of casemates, and well-preserved structural parts. Unfortunately, the moat no longer has caponiers, and the posterns have been filled in. The fort features interesting elements such as an artillery transport elevator and stairs leading to the rampart, where remnants of artillery positions can be found. Surrounding the fort are auxiliary forts, highlighting its strategic importance in the border region near the Polish-Ukrainian border. Fort "Salis Soglio" not only constitutes a significant element of military heritage but also an interesting tourist attraction for history and architecture enthusiasts.