Wikihaj is a comprehensive online encyclopedia focused on the themes of Hajj and pilgrimage, operated by the Research Institute of Hajj and Pilgrimage. With over 1,706 articles available in Persian, it serves as a valuable resource for individuals seeking to understand the cultural and religious significance of Hajj. The platform covers a wide array of topics, including historical mosques such as Masjid al-Bai'ah in Mecca, where the Prophet Muhammad first pledged allegiance with the people of Yathrib.

This site also incorporates articles about other important sites related to Islamic tradition and pilgrimage, alongside research publications and literary works related to the practices and experiences of pilgrims. Wikihaj is dedicated to fostering greater knowledge and connection among those interested in the rituals and history of Hajj, promoting an informative experience for both scholars and adherents alike. Users can explore various articles, research materials, and insights, all aimed at enriching their understanding of this significant spiritual journey