Kavous Tower or Mill, which is also called Qaboos Dome, is located in Gonbad Kavous city in Golestan province.
This building is the tallest brick tower in the world and was built in the fourth century AH.
According to the Kufic inscription, a brick was built around it in 397 AH, equal to 375 solar years, during the reign of Qaboos bin Vashmigir, one of the kings of Al-Ziyar.
The present-day city of Gonbad Kavous is located near the ancient city of Jorjan, which was the capital of the Al-Ziyar kings.
This tower is one of the most beautiful and magnificent buildings of the early Islamic period, which, despite the use of very few decorative elements, has a well-proportioned, harmonious, strong and beautiful structure.
This magnificent building is built on a hill that is about 15 meters high from the ground around it and its building consists of three parts: foundation, body and dome, which are 55 meters high on top of each other.
Taking into account the height of the hill, this tower is about 70 meters higher than the surrounding land, which has added to its splendor.
The body of the tower is located on a circular base, which is only about 2 meters outside the ground and a large volume of it is sunk in the heart of the hill.
The body of the tower has 10 triangular blades from the outside, which are at equal distances from each other and start from the base of the building and continue to the bottom of the dome.
The body of the building is made entirely of red baked bricks, which are extremely mature and strong, and due to the sun's rays over the centuries, it has turned into a beautiful golden yellow color, which has added to the beauty of the building. [The tallest brick tower in the world lost in the dust]
According to the height of 18 meters, the conical dome is located on the body of the tower without any intermediaries and has a steep slope and a smooth and polished surface.
The tower has been selected as the best engineering work in human history in an international poll by a number of world-renowned architects.
The tower, which is more than 50 meters high, was built more than a thousand years ago and during this period has experienced twice more earthquakes of magnitude 6, but it is still intact, stable and stable.
Kavous dome tower is made only of bricks and there is no reinforced concrete, metal frame, steel, etc. While neither worn out nor the earthquake was able to leave even a single crack in it.
The calculations of the tower engineer were so accurate that even in the most severe earthquake, the tower returns to its exact place after the usual tremors and shocks.
