Muharram rituals are held all around the world where there are Shia Muslims. However, what you will see and experience in Iran is something beyond religious rituals. Iran offers not only a religious event, but also a part of history embedded in the heart of a tremendous national culture. Traveling to Iran in Muharram might not seem fascinating in the first place. But the first ten days of this lunar month will leave a visitor wonder-struck; particularly when it moves towards its climax: Ashura.
Read more here: https://www.visitouriran.com/blog/ashura-and-muharram-rituals-in-iran/