Soba is the former capital of the medieval Nubian kingdom of Alodia from the sixth century until around 1500. E. A. Wallis Budge identified it with a group of ruins on the Blue Nile 19 kilometres (12 mi) from Khartoum, where there are remains of a Meroitic temple that had been converted into a Christian church. This would place Soba in the modern-day Sudanese state of Al Jazirah.
Ibn Selim el-Aswani described the city as large and wealthy, but he probably never visited it and modern archaeological investigations show it to have been a moderate centre. Built mainly of red brick, the abandoned city was plundered for building material when Khartoum was founded in 1821. Development from the growth of suburbs now threatens the ruins.