Herat Citadel, located in Herat, Afghanistan, is also known as the Citadel of Alexander. It stands as a formidable historical fortress at the heart of Herat city. Believed to have been originally established by Alexander the Great in the 4th century BCE, the citadel has undergone various phases of reconstruction and renovation throughout its long history. During the 14th and 15th centuries, it served as a palace for the Timurid dynasty. The structure has a military architectural style, reflecting its primary use as a defense stronghold. Despite suffering damage due to conflicts and invasions over the centuries, Herat Citadel has been restored several times, most recently with the help of the Aga Khan Trust for Culture. Visitors to the citilege can explore the site and its history, which is closely intertwined with the city's rich cultural heritage. The citadel encompasses several towers, ramparts and a museum that showcases artifacts from various periods of Herat's history, offering insight into the region's past from pre-Islamic times to the modern era.