Prime Minister Najib Abdul Razak today boasted about Malaysia being listed as among the best places to retire - but he lamented that there were certain individuals who refused to do so.

"Today, somebody just informed me that Malaysia has been ranked as (among) the best places to retire in the world.

"That's quite amazing - the most liveable and the best place to retire.

"Although one or two have refused to really retire, but that's another question," Najib said during a meet-and-greet session at Taman Tugu in Kuala Lumpur today.

Najib did not name anybody, but appeared to refer to his former mentor Dr Mahathir Mohamad, who had vowed to oust him as prime minister.

Mahathir retired as prime minister in 2003 but is now in active politics again, after he formed Parti Pribumi Bersatu Malaysia (Bersatu).

Through his new political party, Mahathir has helped organise efforts to end BN's uninterrupted hold on power.

Malaysia was listed as the sixth best place to retire in 2017 by magazine International Living.

"Malaysian cities are clean and modern, its public transport unrivalled and its people the friendliest in Asia.

"And while other Asian countries offer great budget holidays, and some offer first-class vacations, Malaysia manages to cater extraordinarily well to both," the journal said.

During the event, Najib also spoke about the RM650 million Taman Tugu project, which he said, when completed, would be placed under the National Heritage Trust.

He said an additional 25-acres of land adjacent to the park would also be placed under the trust, bringing the total size to 91 acres.

Najib said Taman Tugu and Perdana Botanical Park would collectively have 331 acres of green space.

"With the National Heritage Trust, Taman Tugu will be protected and kept green forever. It is the government's commitment for the city folk," he said.

Najib urged support for the project, stressing that the park would not only become a tourist destination but an icon of Kuala Lumpur.