The Azam Mosque sits directly adjacent to the Fatimah al-Masumah Shrine complex and is one of the largest mosques in Iran, built over several decades in the 20th century to accommodate the pilgrim overflow. The mosque's interior is covered in elaborate mirror-work and tilework in the style of Qajar-era religious architecture, taken to an almost overwhelming scale.
Entry for non-Muslims depends on the time of day and the discretion of the staff — Friday prayer times are usually closed to visitors, but at other hours a respectful visit is often possible. Even from the courtyard, the scale of the minarets and the quality of the tile work are worth seeing.