IntegrityThe Masjed-e Jāme’ contains a continuous sequence of Islamic architectural styles, the most prominent of which date from the Seljuq period. For this reason, any project proposed should be carefully assessed on the basis of comprehensive Heritage Impact Assessments and respect the historic setting and urban proportions around the Masjed-e Jāme’. One of the most important aspects of authenticity is the function of the Masjed-e Jāme’ of Isfahan, both as a mosque, which continues to be used for prayers, and as a component of the Isfahan historic bazaar fabric. To respect the authenticity of spirit and feeling, the museum function of Masjed-e Jāme’ has to remain sensitive to its religious use, both in terms of information panel design and visitor numbers. At the time of inscription it is located in the vicinity of the Masjed-e Jāme’ but is in the process of moving into a permanent base in the mosque complex.