Tidore is a city, island, and archipelago in the Maluku Islands of eastern Indonesia, west of the larger island of Halmahera. Part of North Maluku Province, the city includes the island of Tidore together with a large part of Halmahera Island to its east. In the pre-colonial era, the Sultanate of Tidore was a major regional political and economic power, and a fierce rival of nearby Ternate, just to the north. Within the city is the provincial capital, Sofifi.