Adobe houses are found across arid and semi-arid regions on every inhabited continent, with major concentrations in the American Southwest, North Africa, the Middle East, Central Asia, and South America. The common thread is climate: adobe thrives where rainfall is low, sunshine is plentiful, and suitable clay soil is abundant underfoot. Roughly a third of the world’s population still lives in earthen structures of some kind, and adobe remains one of the most widespread traditional building methods on the planet.
The American Southwest
In the United States, adobe construction is most closely associated with New Mexico, Arizona, Texas, and parts of California. New Mexico is the heartland. Cities like Albuquerque and Santa Fe are filled with both ancient and modern adobe buildings, and the style still exerts a dominant architectural influence on new construction throughout the region. Taos Pueblo, a multi-story adobe complex in northern New Mexico that has been continuously inhabited for over a thousand years, is one of the most recognized adobe structures in the world. Other notable pueblos include Acoma, Zuni, Laguna, and Isleta.
Adobe construction in this region predates European contact by centuries. Native peoples of the Southwest built with adobe or a combination of adobe and local stone long before Spanish colonizers arrived and adopted the technique. Texas has a significant adobe tradition as well, particularly west of the Pecos River, where the dry climate makes earthen walls practical. New Mexico takes adobe seriously enough to maintain specific building codes for earthen construction, updated as recently as 2023, covering adobe, rammed earth, and compressed earth block for one- and two-family homes up to two stories.
The Middle East and Mesopotamia
The oldest known adobe structures come from Mesopotamia, the region spanning modern-day Iraq, Syria, and surrounding areas. Cities like Ebla in Syria contain massive mudbrick palaces and temples dating to the Early Bronze Age. Clay was the most common building material across the ancient Near East, typically used over stone foundations, with mudbrick forming the upper walls. This technique spread across the region and never disappeared.
Yemen is home to some of the most visually striking adobe architecture still standing. The city of Shibam, often called “the Manhattan of the desert,” features mudbrick tower houses up to eight stories tall, some dating back 500 years. These buildings require constant maintenance because exposed mudbrick erodes quickly under sun, wind, and occasional rain. That fragility is a defining challenge of adobe everywhere, but especially in regions where preservation resources are limited.
Turkey and Central Asia
Turkey’s Anatolian plateau is one of the world’s richest regions for adobe housing. In Eastern, Southeastern, and Central Anatolia, adobe remains a common building material in rural villages. The village of Balaban in Malatya Province is built entirely of adobe and belongs to Turkey’s Historic Villages Association. Near Urfa in Southeastern Anatolia, you can find distinctive conical-domed adobe homes with roofs plastered in soil, a building tradition that traces back roughly 5,000 years to ancient Mesopotamian dome construction.
Central Asia more broadly, including parts of Iran, Afghanistan, and the surrounding region, has deep adobe roots. In Iran, traditional adobe bricks are made from clay soil containing 30 to 40 percent clay mixed with 60 to 70 percent earth and water, with a small amount of wheat straw (about half a percent by weight) added for reinforcement. Persian historical buildings made with this recipe have survived for centuries in the country’s dry interior.
Africa and South America
Adobe construction stretches across North and West Africa. Morocco’s Ait Benhaddou, a fortified village of red-brown earthen buildings along a former caravan route, is one of the best-known examples and a UNESCO World Heritage Site. Libya also has a long tradition of earthen building. Across the Sahel and sub-Saharan West Africa, the Great Mosque of Djenné in Mali stands as the largest mudbrick structure in the world, replastered annually by the community in a massive collective effort.
In South America, adobe has been used for millennia, particularly along the dry Pacific coast and in highland areas. Peru’s Huaca del Sol, a massive adobe pyramid built by the Moche civilization, used an estimated 130 million mudbricks. Today, adobe housing remains common in rural areas of Peru, Bolivia, Ecuador, and parts of Chile and Argentina, wherever dry climates and accessible clay soils converge.
Why Climate Determines Where Adobe Works
Adobe houses cluster in regions that receive relatively little rainfall because water is the material’s greatest enemy. The National Park Service has tested what happens when rainstorms hit unprotected adobe walls. A typical yearly rainstorm (about 0.7 inches of rain in 30 minutes) causes only around 0.5 percent material loss. But a severe storm delivering 1.67 inches, the kind that might happen once every 25 years, causes 3.3 percent loss and affects a much larger surface area. A once-in-a-century downpour erodes 5.6 percent of exposed wall material in a single event. There’s a clear threshold: adobe handles light rain reasonably well but deteriorates rapidly under heavy precipitation.
This is why you won’t find traditional adobe construction in tropical or rainy temperate zones. The sweet spot is generally below about 10 to 15 inches of annual rainfall, though well-maintained adobe with protective plaster and roof overhangs can survive in somewhat wetter areas.
What Makes Adobe Suited to Hot, Dry Climates
Beyond simply resisting rain, adobe walls perform exceptionally well in desert heat. A standard adobe wall produces roughly a 12-hour phase lag in temperature, meaning the midday heat doesn’t reach the interior until midnight, and the cool nighttime temperatures keep the inside comfortable through the hottest afternoon hours. This natural thermal cycling eliminates or reduces the need for mechanical cooling, which is why adobe has remained practical in regions where temperatures swing dramatically between day and night.
The environmental footprint is also remarkably low. Adobe bricks carry an embodied energy of about 0.29 megajoules per kilogram, a fraction of what concrete, steel, or fired brick require. Almost all of the energy cost, over 94 percent, comes during the production stage, which in traditional settings means little more than mixing soil and water and letting bricks dry in the sun. At the end of a building’s life, adobe walls can essentially return to the earth they came from. In an era when the global construction industry accounts for roughly 37 percent of CO2 emissions, that simplicity has renewed appeal.
Adobe in the Modern World
Adobe hasn’t disappeared. It has adapted. In Santa Fe and Albuquerque, new homes are still built in the adobe style, sometimes with traditional sun-dried bricks and sometimes with modern stabilized versions. New Mexico’s building code specifically addresses earthen wall systems, setting allowable wall heights based on seismic conditions and limiting structures to two stories for residential use. Compressed earth blocks, a machine-pressed cousin of traditional adobe, are gaining traction in developing countries as a low-cost, low-carbon alternative to concrete block.
In Turkey, Iran, Morocco, and Peru, preservation efforts focus on maintaining historic adobe structures that face constant threats from weather, earthquakes, and neglect. The challenge is real: once excavated or exposed, mudbrick erodes quickly under sun, rain, and wind. But the sheer number of people still living in earthen buildings, combined with growing interest in sustainable construction, means adobe architecture is far from a relic. It remains a living tradition across dozens of countries, anchored to the same dry landscapes where it first emerged thousands of years ago.