Kandovan is one of the villages of East Azarbaijan province in Osku city with more than 7000 years of historical background. In 1997, it was registered as one of Iran’s national heritages. The village of Kandovan is famous because of the conical shape of the houses that are made of rocks and located in a rocky mountain. No materials such as gypsum, lime or clay, have been used in the unique architecture of these houses and all of them are carved into the volcanic rocks of Sahand Mountain. The rocks are the result of thousands of years of eruption.