France has formally ceded its former navy command centre in Papeete to French Polynesia.
The transfer was signed by the French High Commissioner Dominique Sorain and the French Polynesian president Edouard Fritch.
The 3300 square metre site on the Papeete waterfront, worth more than US$6 million, had been earmarked for an information and documentation centre to commemorate the legacy of French nuclear weapons tests.
In 2018, the French National Assembly voted for such a transfer on condition that a nuclear museum was built on the site by 2023.
The plan to build such a centre dates back to the presidency of Francois Hollande as part of France's acknowledgement of its nuclear legacy.
France used Moruroa and Fangataufa atolls for its tests between 1966 and 1996.
Until 2010, France claimed that its 193 tests in Moruroa and Fangataufa had caused no harm to humans.
Last year, the site was claimed by a royal descendant Joinville Pomare who said the land in question was never sold but taken by the French state in 1842.
An anti-nuclear group, Association 193, which was critical of the centre planning process, suggested it would serve French propaganda that the tests were clean.
France told French Polynesia that classified documents won't be released to the planned centre.
Although France stopped its weapons tests, it refused to return the excised atolls to French Polynesia and declared them a no-go zone.