Explore the map of Eritrea, it is officially known as the State of Eritrea, a nation in the Horn of Africa located in the area of Eastern Africa, with its largest city and capital at Asmara. The north-eastern and eastern region of Eritrea have a broad coastline on the Red Sea. The country has a total area of around 45,406 square miles (117,600 km2), and contains various of the Hanish Islands and the Dahlak Archipelago.