The Hasanabad Moshir qanat is a flow of crystal-clear water deep within the hot and scorching regions.

The qanat is an Iranian technology for water transfer, consisting of an underground channel and several wells. Over a thousand years ago, Iranian architects and engineers, with the basic tools they had, made ingenious innovations that enabled them to bring water from miles away to distant lands, sustaining life in the cities and villages of Iran. Interestingly, many qanats across Iran are still operational, and water continues to flow through them after centuries, such as the "Hasanabad Moshir" qanat.

Iran's qanats are primarily located in hot and dry regions. Among all the provinces of Iran, Yazd is famous for the number and unique characteristics of its qanats. The Hasanabad Moshir qanat is one of the important qanats in the province, located in Mehriz. The city of Mehriz is situated in the south of Yazd, with a population of over 30,000 people. Since the climate of Mehriz is hot and dry, its houses are built in a way that minimizes direct sunlight exposure. Traditional architectural features of Mehriz include windcatchers, thick and tall walls, domed roofs, and the presence of cellars (basements). Some experts trace the history of Mehriz back to the reign of Khosrow I (531–579 AD), believing the city's name to be derived from "Mehrnegar," the daughter of this Sassanian king. Throughout Mehriz, there are numerous historical sites that reflect its ancient and rich history, showcasing a complete collection of architecture and historical artifacts from Iran's desert regions. Among these, several sites are UNESCO World Heritage-listed, including the Hasanabad qanat, Pahlavanpur Garden, Mirza Nasrollah's watermill, and the Zein-o-din Caravanserai.

The Hasanabad qanat is considered one of the longest qanats in the world, transporting water over a distance of 71 kilometers from ancient times to the present. The construction of this qanat dates back to the Islamic Middle Ages (8th century AH / 14th century AD). It originates from the Gharbalbiz mountains, part of the Shir Kuh mountain range, and its main well (the primary well dug at the beginning of the canal’s path and the closest well to the underground water table) has a depth of 40 meters. The Gharbalbiz  spring is located near the main well of the Hasanabad Moshir qanat. The spring is situated near a village called "Madvar," and its water emerges from holes that form a 40-meter-long path. Thus, the approximate catchment area of the spring covers 10 square kilometers. The overflow of this spring provides part of the qanat’s water supply. After passing through Mehriz and the villages of Dehno and Hasanabad, the qanat reaches the Maryamabad neighborhood of Yazd. Since the qanat’s outlet is located in "Hasanabad Moshir," it has been named accordingly. A notable feature of the Hasanabad qanat is its passage through the middle of the Pahlavanpur Garden.

The Hasanabad Moshir qanat was registered as a UNESCO World Heritage site in 2016 (1395 in the Iranian calendar) during the 40th session of the World Heritage Committee held in Istanbul, Turkey. It was listed alongside 10 other qanats as the twentieth Iranian site on the World Heritage list. The qanat was also registered nationally in 2011 (1389 in the Iranian calendar).