They venerate fire as a supreme form of purity. Alongside water, air and earth, the elements must not be contaminated by human activity.
Iran’s ancient ‘wind catchers’ beat the heat naturally
The wind catchers, called badgirs in Persian, are just one of the engineering marvels inhabitants have developed in this ancient city in central Iran -- where temperatures reach well over 40 degrees celsius (104 Fahrenheit) in the summer. And, unlike energy-guzzling air-conditioners, they're cost and carbon-free.
