Zendan-e Iskandar, or “Alexander’s Prison,” is a historic 15th-century domed structure in Yazd, Iran, linked to local legends about Alexander the Great. Located in the Fahadan neighborhood near the Davazdeh Imam Shrine, this site features an impressive 18-meter-high dome, adorned with floriated Kufic inscriptions. Originally part of the Madarasa Ziaiyya, a religious school established in the 13th century, Zendan-e Iskandar has undergone restoration by Iran’s National Heritage Organization, becoming a popular tourist attraction. Yazd, designated a UNESCO World Heritage site in 2017, showcases a rich cultural blend of Islam, Judaism, and Zoroastrianism amid its architectural wonders.