The Imam Hussein Mosque (Masjid Imam al-Husayn) in Najaf is a commemorative mosque and prayer site honoring Imam Hussein ibn Ali, the grandson of the Prophet Muhammad. While Imam Hussein’s actual shrine is in Karbala, this mosque in Najaf serves as a symbolic and spiritual connection between the two holy cities of Najaf and Karbala, both central to Shia Islam. It stands near the Wadi al-Salam Cemetery, one of the largest cemeteries in the world, and close to the Imam Ali Shrine, making it an imp