The Kingdom of Tonga Our trips to the Kingdom of Tonga incorporate activity at our main island base on Tongatapu and the outer islands. Tongatapu (Sacred South) Main Island in the Kingdom Area: 260 sq kms | Population: 69,000 Malo e lelei! Welcome to Tongatapu. The ancient Kingdom of Tonga is an archipelago of 176 islands (52 of which are inhabited), scattered over 700,000 square kilometres of ocean in the South Pacific. As the Kingdoms cultural and political centre, Tongatapu is … Continue reading Tongatapu