Badgir Windcatcher: A Traditional Iranian Architecture Feature
An architectural innovation to capture cool air in a desert environment.
A badgir (Persian bâdgir, literally “wind catcher”) is a tower built on the roof of a traditional Iranian building to cool and ventilate the rooms below without any mechanical power. Windcatchers are one of the most recognisable features of Iran’s desert architecture, and in cities such as Yazd and Kashan they still shape the skyline.
This guide explains what a windcatcher is, how it works, where to see the best examples in Iran, and why the idea still matters to architects today.
Contents
Why Iranian builders developed the windcatcher
Iran has a long and varied architectural history, and Iranian monuments and building traditions can be found from Syria to northern India and the borders of China. Builders used a wide range of techniques, including stone carving, stucco, tile and brickwork, and mirror and glasswork.
Climate shaped this architecture as much as taste did. Much of the Iranian plateau is arid, and towns on the edge of the great deserts, the kavir, faced intense summer heat, scarce water and, at times, strong winds. These conditions limited what builders could do, but they also pushed them to find clever, low-energy solutions.
Three of the best-known responses to the desert climate work together: the badgir, which moves air; the qanat, an underground channel that brings water from distant aquifers; and the ab-anbar, a covered reservoir that stores that water.
Building materials suited to the desert
With little timber or stone available in many desert towns, builders relied mainly on mud and its derivatives. Earth dug from the building site was often turned into mortar and sun-dried bricks, which made construction largely self-sufficient.
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Thick walls of baked or unbaked brick absorb the sun’s heat slowly during summer days and release it at night. In winter, the same thick walls help keep interiors warm. Houses were often built around sunken courtyards, with tall walls, domed or vaulted roofs and windcatchers, and they were oriented to make the most of winter sun and summer breezes.
How a windcatcher works
A windcatcher is a tower with vertical shafts and openings at the top. It cools a building in two main ways.
- Catching the wind: when a breeze blows, the opening facing the wind channels air down the shaft into the rooms below. Openings on the sheltered side are under lower pressure, so they draw warm, stale air up and out of the building.
- Acting as a chimney: when there is little wind, the sun heats the tower walls. The warm air inside rises and escapes, which pulls cooler air from the courtyard, basement or garden through the house.
Because the thick brick tower stores heat during the day and gives it off at night, it can also help ventilate the house after dark. Some windcatchers have openings facing one direction only, while others open on two, four or even eight sides to catch wind from several directions.
Windcatchers and water cisterns
Windcatchers were not only built on houses. Many public water reservoirs in Iran have one or more windcatchers above their domes. Air moving across the surface of the stored water cools it by evaporation, and the circulation helps keep the water fresh. Some houses used the same principle, passing air from the windcatcher over a pool or through a cool basement before it reached the living rooms.
Where to see windcatchers in Iran
According to Encyclopaedia Iranica, windcatchers appear in many regions of Iran, mainly in hot, dry areas such as Yazd, Kashan, Na’in, Kerman and Tabas, as well as in the ports of the Persian Gulf. These are some of the best places to see them.
Yazd, the city of windcatchers
Yazd is often called the city of windcatchers, and its historic centre is a UNESCO World Heritage Site. Walking through the old quarter or looking out from a rooftop café is the easiest way to see dozens of towers at once. Our Yazd travel guide covers the main sights, and the Yazd Water Museum explains how qanats and cisterns supplied the city.
Dowlat Abad Garden, Yazd
The pavilion at Dowlat Abad Garden has Iran’s tallest windcatcher. Encyclopaedia Iranica records that it rises about 33 metres above the roof of the pavilion it serves. The garden is one of the sites included in UNESCO’s Persian Garden World Heritage listing.
Kashan’s historic houses
Kashan’s restored 19th-century merchant houses show how windcatchers, courtyards, domes and basements worked together. The Borujerdi House is one of the most photographed examples.
Why windcatchers still matter
Windcatchers cool buildings with no fuel and no moving parts. That is why architects and engineers continue to study them as a model for low-energy ventilation in hot climates. For travellers, they are also a visible reminder of how Iranian communities adapted to the desert long before air conditioning.
Plan a visit
If you would like to see windcatchers, qanats and historic houses with a local guide, explore SURFIRAN’s Iran cultural tours or Iran desert tours, which include itineraries through Yazd. To arrange your own stay, you can compare hotels and travel options in Yazd on OrientTrips.
