Yazd is the capital of Yazd Province. Because of generations of adaptations to its desert surroundings, Yazd is an architecturally unique city. It is also known in Iran for the high quality of its handicrafts, especially silk weaving, and its confectionary. Yazd is the driest major city in Iran, and also the hottest north of the Persian Gulf coast. Even at night the temperatures in summer are rather uncomfortable. In the winter, the days remain mild and sunny, but in the morning the thin air and low cloudiness cause very cold temperatures.