Ice Chamber of Meybod is located in Meybod , Yazd province , Iran. It dates back to Safavid era.
Ice Chamber (Yakhchāl in Persian) is an ancient type of evaporative cooler. Above ground, the structure had a domed shape, but had a subterranean storage space; it was often used to store ice, but sometimes was used to store food as well. The subterranean space coupled with the thick heat-resistant construction material insulated the storage space year round. These structures were mainly built and used in Persia. Many that were built hundreds of years ago remain standing.
By 400 BCE, Persian engineers had mastered the technique of using Yakhchals to create ice in the winter and store it in the summer in the desert. In most Yakhchals, the ice is created by itself during the cold seasons of the year; the water is channeled from the Qanat (Iranian aqueduct) to the Yakhchal and it freezes upon resting inside the structure. Usually a wall is also made along an east-west direction close to the Yakhchal and the water is channeled from the north side of the wall so that the shadow of the wall keeps the water cool to make it freeze more quickly. In some Yakhchals, ice is also brought in from nearby mountains for storage or to seed the icing process.