Aden is a seaport city in Yemen, located by the eastern approach to the Red Sea (the Gulf of Aden), some 170 kilometres east of Bab-el-Mandeb. Aden was the capital of the People's Democratic Republic of Yemen until that country's unification with the Yemen Arab Republic. On that occasion, the city was declared a free trade zone.[citation needed] Aden gives its name to the Gulf of Aden. (Wikipedia)Black and white postcard showing Sheikh Ahmed's Tomb at Steamer Point, Aden. A number of camels are walking down the road. chatham-holmes family collection, aden, sheikh ahmed tomb, postcard, hotel de l'europe