Architectural heritage

The historical villages and buildings located within the boundaries of the aflaj the World Heritage site are important elements that contribute to the Outstanding Universal Value of the property. They contribute to highlight the values of the architectural heritage.
Houses were built of local materials, such as mud bricks, earth and palm. It was evident that the grander houses (and possibly also the smaller ones) were commonly built with mud bricks made from excavated adjacent land, which had the additional advantage of lowering the level of the land and improving the flow of water from the falaj channel.