| Seiyun Palace | |
|---|---|
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  Location within Yemen | |
| General information | |
| Town or city | Seiyun |
| Country | Yemen |
| Coordinates | 15°58′N 48°47′E / 15.967°N 48.783°E |
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Seiyun Palace was the royal residence of the sultan of Kathiri, located in the town of Seiyun in the Hadhramaut region, in eastern Yemen. It is one of the world’s largest mud-brick structures.