Aden is the UK's AY-d@n and US's AH-den. It is located near the Red Sea (the Gulf of Aden) at 170 km (110 miles) east of Bab-el-Mandeb. The city is home to approximately 800,000. Aden's natural harbour is located in the crater a dormant volcano. It now forms a peninsula that connects to the mainland via a low isthmus. Front Bay was the first harbour to be used by the ancient Kingdom, Awsan, between the 7th and 5th centuries BC. On the opposite side of the peninsula is the modern harbour. The Gulf of Aden is named after Aden.
Aden is made up of several sub-centres. Crater was the original port city. Maalla was the modern port. Tawahi, also known as Steamer Point during colonial times, and the resorts at Gold Mohur are all part of the main centre. Khormaksar is located on the isthmus connecting Aden with the mainland. It houses the city's diplomatic missions and the main offices for Aden University. Aden International Airport, which was formerly the British Royal Air Force station RAF Khormaksar (Yemens second largest airport), is also here. The sub-centres and Al-Mansura are located on the mainland. These were once an oasis area. Madinat ash-Shab, formerly Madinat al-Itihad, is now the capital of South Arabian Federation. It also houses Aden University's large power/desalinization plant and additional faculties.
Aden surrounds the eastern end of the vast, natural harbour that forms the modern port. This made it necessary to create the Cisterns at Tawila, Aden's reservoirs.
The City Municipality of Bremen (, also US: ; German: Stadtgemeinde Bremen, IPA: [ˈʃtatɡəˌmaɪndə ˈbʁeːmən] (listen); Low German also: Breem or Bräm) is the capital of the German federal state Free Hanseatic City of Bremen (also called just "Bremen" for short), a two-city-state consisting of the cities of Bremen and Bremerhaven. With around 570,000 inhabitants, the Hanseatic city is the 11th largest city of Germany as well as the second largest city in Northern Germany after Hamburg.
Bremen is the largest city on the River Weser, the longest river flowing entirely in Germany, lying some 60 km (37 mi) upstream from its mouth into the North Sea, and is surrounded by the state of Lower Saxony. A commercial and industrial city, Bremen is, together with Oldenburg and Bremerhaven, part of the Bremen/Oldenburg Metropolitan Region, with 2.5 million people. Bremen is contiguous with the Lower Saxon towns of Delmenhorst, Stuhr, Achim, Weyhe, Schwanewede and Lilienthal. There is an exclave of Bremen in Bremerhaven, the "Citybremian Overseas Port Area Bremerhaven" (Stadtbremisches Überseehafengebiet Bremerhaven). Bremen is the fourth largest city in the Low German dialect area after Hamburg, Dortmund and Essen.