From Kashan you can take a road west to Delijan (84 km.) at the junction of the main Isfahan road.
After about 15 km. from Kashan a track , goes off to the left for a few km. to the village of Niasar. Here , on a nearby hill , is a heavily restored Sassanian Atashkadeh or Chahar Taq of the type from which the sacred fire could be seen from a great distance , thus serving as a signal or beacon to travelers , as well as the focal point of religious ceremonies.
Although its precise date is not know , it is interesting to see that it makes clear use of a squinch in the zone of transition at the base of the dome.
A from of wide gallery also runs round the dome.