Aden is a port city located in Yemen. It is the second largest city in the country and is situated on the Gulf of ADEN. It is an important commercial hub and has been a major trading center since ancient times. ADEN is also home to the Port of ADEN, which is one of the busiest ports in the region. The port is a major gateway for goods entering and leaving Yemen, and it serves as an important transit point for ships traveling between the Middle East and Africa.