The Citadel of Herat, also known as the Herat Citadel or Citadel of Alexander, is a historic fortress located in the city of Herat, Afghanistan. It dates back to the 5th century and has been rebuilt and renovated multiple times throughout its history. The citadel features impressive mud-brick architecture and has served various purposes, including military defense and royal residence. The citadel is strategically positioned on a hill, providing a commanding view of the surrounding area. It is a significant cultural and historical landmark, reflecting the rich heritage of Afghanistan. Today, the Citadel of Herat is a popular tourist attraction and a symbol of the city's resilience.