Zanzibar
Zanzibar (; ; ) is a semi-autonomous region of Tanzania. It is composed of the Zanzibar Archipelago in the Indian Ocean, off the coast of the mainland, and consists of many small islands and two large ones: Unguja (the main island, referred to informally as Zanzibar) and Pemba Island. The capital is Zanzibar City, located on the island of Unguja. Its historic centre is Stone Town, which is a World Heritage Site.
Mjini Magharibi Region
Mjini Magharibi Region (also known as the Zanzibar Urban West Region) is one of the 31 regions of Tanzania. Located on the island of Unguja, Zanzibar City serves as the region's capital. According to the 2012 Tanzania National Census, the population of the Zanzibar Urban/West Region was 593,678.