The Fortress of Pignerol is a historic military fortification located in the town of Pinerolo, Italy. Constructed in the 17th century, it was designed to protect the region from invasions and to control the strategic routes through the Susa Valley. The fortress features thick walls and a star-shaped layout, typical of military architecture of that era. Throughout its history, the fortress has served various purposes, including a prison for notable figures such as the Man in the Iron Mask. Today, the Fortress of Pignerol is a popular tourist attraction, offering visitors insights into its rich history and stunning views of the surrounding landscape.