There has been a lot of controversy over the purpose of this building and the construction date. Some believe this to be a School, an Abbey and also a burial place for the Iranian philosopher, theologian and jurist Imam Mohammad Ghazali (the 6th century), others refer to it as a mosque which replaced a Sassanid Temple after the Muslim invasion.
Harooniyeh was construed using an "Azeri” method. It is a mysterious and unique monument of the ancient tous city.
It is a rectangular monument made of bricks. The balcony, the guest room, the doom and the rooms can all be accessed by the public.
Outside this monument a little memorial stone of “Imam Mohammad Ghazali” can be seen. And also a rectangular garden has been built right in front of the balcony.
Source: Oruj Travel