It was a "great accolade" and she was already planning the official inaugural event later this year, she said in a statement.

"Table Mountain is a marvel of history, geology and biodiversity -- it even has a stellar constellation named after it," she said.

"The wonder becomes part of school curricula, it becomes a 'must see' and a 'bucket list' item for travellers and explorers."

The mountain was provisionally named a wonder by Swiss foundation New7Wonders in a global poll last year. Hundreds of millions of votes were cast for 28 finalists over three years; these numbers also had to be verified.

The other six wonders are the Amazon forest in South America, Halong Bay in Vietnam, the Iguazu Falls in Brazil and Argentina, Jeju Island in South Korea, Komodo Island in Indonesia and the Puerto Princesa underground river in the Philippines.