Yemen - Unesco Old City of Sana'a

Sanaa is one of the oldest populated places in the world, According to popular legend, it was foounded by Shem, the son of Noah

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Yemen - Unesco Old Walled City of Shibam

Surrounded by a fortified wall, the 16th-century city of Shibam is one of the oldest and best examples of urban planning based on the principle of vertical construction. Its impressive tower-like structures rise out of the cliff and have given the city the nickname of ‘the Manhattan of the desert’.

The houses of Shibam are all made out of mud brick and about 500 of them are tower blocks, which rise 5 to 11 stories high, with each floor having one or two rooms. This architectural style was used in order to protect residents from Bedouin attacks. 

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