Nukuʻalofa is the capital of the Kingdom of Tonga. It is located on the north coast of the island of Tongatapu, in the southern most island group of Tonga. The Declaration of the Constitution of Tonga in 1875 formalised Nuku'alofa as the Capital of Tonga. King George Taufa'ahau Tupou I issued the Constitution of Tonga on 4 November 1875, in Nuku'alofa. The Constitution also stated that the Parliament will meet in Nuku'alofa except in time of war. Nukuʻalofa is the economic hub of the country. Peau Vava'u, an airline, had its head office in the Pacific Royale Hotel in Nukuʻalofa. The former Royal Tongan Airlines had its head office in the Royco Building in Nukuʻalofa. The city has markets and a central business district. Much of the central business district was destroyed during the 2006 Nuku'alofa riots, but it is being rebuilt.