BBC - MYTHS AND HEROES: THE QUEEN OF SHEBA: Shibam, Wadi Hadramawt, Yeman

Some of the mud-brick houses are 15 stories high and rise to over 40 metres. The walls at the base are 2m thick, and the upper stories coated with many layers of alabaster 

Nikon F5, 17-35mm, Fuji Velvia 100