The holy shrine of Imam Reza, the eighth Shia Imam in Islam, is geographically located in a city called Mashhad in Khorasan Razavi Province. The city is considered as the holiest place of Iran because of the holy shrine. Imam Reza Holy Shrine is the largest shrine of the world considering its area. This complex includes many other constructions and popular monuments which are tourist attractions too such as Goharshad Mosque, museum, library, seminaries, cemetery, university of Islamic Science, prayer halls and dining halls. The holy shrine of Imam Reza is surrounded by seven courtyards and this adds to the magnificence of the shrine. Dust Clearing is a famous ceremony hold in the shrine, visiting the shrine at this time makes you enjoy its spiritual atmosphere. The fundamental construction of the holy shrine dates back to 9th century.