The Historical Center of the City of Sana represents a remarkably preserved urban landscape that has been continuously inhabited for over two millennia. Its origins are traced back to the Sabaean period, and it became a major center for the propagation of Islam in the early centuries of the religion. The city's unique architectural character is defined by its multi-story tower houses constructed from rammed earth and burnt brick, featuring distinctive geometric friezes and stained-glass windows. This architectural style is a testament to highly developed building techniques adapted to the local climate and available materials. For centuries, Sana served as a vital hub on the trans-Arabian trade routes, facilitating the exchange of goods and cultural influences. The urban fabric of the historic center, with its dense structure of houses, mosques, and public baths, reflects the social and spatial organization of a traditional Islamic city. The Great Mosque of Sana is one of the oldest in the world, with its foundation dating back to the early Islamic period. The city's historical significance and its outstanding universal value as a showcase of traditional Yemeni architecture have been recognized internationally.