If you are in Isfahan or Kashan and want to get away from the noise and pollution of the cities then you might wish to consider a piece of paradise just 2 hours away. Latif and Yakhab mountain range. You can hike the sand dunes, see an ancient fortress and taste the Salt from one of Iran's biggest salt lakes, all and all in 3 days. Besides you will have the opportunity to sleep in a million star dwelling!
https://www.lonelyplanet.com/iran/alamut-valley/activities/caspian-trek/a/poi-act/1561471/1332347 https://www.lonelyplanet.com/iran/alamut-valley/activities/caspian-trek/a/poi-act/1561471/1332347