The capital of South Sudan is Juba. Established as the capital in 2011 when South Sudan gained its independence from Sudan, Juba has become the political, economic, and cultural center of the country. It is located on the banks of the White Nile River and has seen significant development since independence, although it still faces challenges such as infrastructure needs and economic stability. The city is also known for its diverse population and is a hub for humanitarian efforts in the region.