The Great Mosque of Sana'a, also known as Al-Jami'al-Kabir, is one of the oldest and most significant religious buildings in the Islamic world, situated in the heart of Sana'a, the capital city of Yemen. Believed to have been constructed during the lifetime of the Prophet Muhammad, it is often said that it was built on the site of a pre-Islamic Christian church and later expanded by the Caliphs of the Umayyad and Abbasid dynasties. This historical mosque boasts a vast prayer hall, a beautiful courtyard, and characteristic Yemeni architecture, including intricately carved wooden doors and stunning minarets. The mosque's library contains a vast collection of Islamic manuscripts, some of which are centuries old. The building has stood the test of time, surviving throughout periods of conflict and political changes, and continues to serve as a place of worship as well as a symbol of Yemen's rich Islamic heritage.