Niasar Fire Temple is a Chahartaq construction located on the heights of Niasar in Kashan. The construction of Niasar Fire Temple dates back to Sassanid era and was used for holding Zoroastrian religious ceremonies. This building is the oldest and the biggest example of Chahrtaq in Iran which is still in a good condition and was destroyed to the least level. This building which is also known as the Chahar Darvazeh or Chahar Qapu is a foursquare structure built over a square plan. There are four columns on each side which are responsible for maintain the dome and in between the columns there are entrances with arched shape. The magnificence in the structure is where this foursquare turns into and octagon and then to a circle where the building is crowned with a dome. Niasar Fire Temple was made of stones and plaster with both natural and artificial shapes in different sections. It is important to mention that this fire temple was built in line with astrological rules and beliefs. This adds to the value of this heritage. Alaedin Travel suggests you an Iran tour package so you could be able to enjoy exploring its attractions such as Niasar Fire Temple.