The Citadel of Sisteron is a historic fortress located in the town of Sisteron, France. Perched on a rocky outcrop, it offers stunning views of the surrounding landscape and the Durance River. The citadel was originally built in the 12th century and has undergone various modifications over the centuries, reflecting different architectural styles. This strategic site played a significant role in the defense of the region, particularly during the Hundred Years' War and the French Revolution. Today, the citadel is a popular tourist attraction, showcasing its rich history and providing visitors with insights into the military architecture of the time.