Muʻa is a small town in the Hahake (eastern) district on the island of Tongatapu, and it was for centuries the ancient capital of the Tongan empire. It is divided in the villages Lapaha and Tatakamotonga, is close to Talasiu and famous for the ancient langi.

Tongatapu is the main island of Tonga and the site of its capital, Nukuʻalofa. It is located in Tonga's southern island group, to which it gives its name, and is the country's most populous island, with 74,611 residents (2016), 70.5% of the national population, on 260 square kilometres. Tongatapu is Tonga's centre of government and the seat of its monarchy.