Arg-e Birjand is a historical citadel located in the city of Birjand, Iran. Built during the Qajar dynasty, it served as a military fortress and a residence for local rulers. The structure features impressive brickwork and a unique architectural style, reflecting the region's history and culture. The citadel is surrounded by a large wall and includes several towers, making it a significant landmark in the area. Today, Arg-e Birjand is a popular tourist attraction, offering visitors a glimpse into Iran's rich heritage and the strategic importance of the site throughout history.