Iran is more or less top of my want-to-go list, vying with Bahia. For one, Iran has mastered the art of natural air conditioning, using wind funnels, called badgirs at the top of each house or building. The badgir sucks in air and cools it as it sinks towards the bottom of the shaft, often passing across a pool of water to further cool the air, before being circulated throughout the house. There is no need for electric air conditioning in this set-up.
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