The Al Abbas Holy Shrine is a Shia Muslim shrine located in the city of Karbala, Iraq. It is dedicated to Abbas ibn Ali, a half-brother of Hussein ibn Ali and the son of Ali ibn Abi Talib and Fatima bint Hizam. Abbas is known for his bravery and loyalty, and is particularly revered by Shia Muslims for his role in the Battle of Karbala in 680 AD, where he was martyred while trying to bring water to his thirsty family members.

The shrine complex consists of several buildings, including the mausoleum of Abbas, which is decorated with gold and silver tiles, mirrors, and calligraphy. It also includes a courtyard, a mosque, a library, and several other structures. The shrine attracts millions of Shia Muslim pilgrims from around the world every year, particularly during the annual Arbaeen pilgrimage, which commemorates the 40th day after the martyrdom of Hussein ibn Ali.

The Al Abbas Holy Shrine is considered one of the most important Shia Muslim shrines in the world, and is a symbol of the resilience and strength of the Shia Muslim community. It has also been targeted by terrorist attacks in the past, including a bombing in 2004 that killed over 100 people. Despite these challenges, the shrine remains a powerful symbol of faith and devotion for Shia Muslims.