Sa'dah is a historic city in northern Yemen renowned for its ancient Islamic architecture and significance as the heartland of Zaydi Shia Islam. The city features magnificent traditional mosques with distinctive Yemeni architectural styles, including the Great Mosque of Sa'dah with its towering minarets and intricate geometric designs. As the ancestral seat of the Zaydi Imams, Sa'dah has been a center of Islamic learning and scholarship for over a millennium, preserving rich manuscripts and religious traditions that continue to define Yemen's Islamic heritage.