Yazd, Iran · Watercolour Postcard

Everyone photographs the tall slotted towers rising over Yazd, but they are not decoration. They are windcatchers, the visible top of a hidden cooling machine. In one of the hottest places on earth, this desert city made and stored ice right through summer using only air, earth and water, no fuel at all, its windcatchers pulling cool air down into deep mud domed ice pits. Celebrate this engineering feat with this A6 art postcard of Yazd, Iran.

Part of the Postcards Home series: a growing collection of original illustrated postcards, each rooted in a real place, ready to write and send.