Ranking third in the list, the magazine called Phu Quoc the “new star of Vietnamese tourism”.
According to Travel+Leisure, improvements in air connections have helped foreign tourists, especially from India, have greater opportunity to explore many destinations in Vietnam.
"Vietnam's largest island Phu Quoc is an enchanting place of white sand beaches, emerald forests dotted with waterfalls, rock pools and caves," it said.
Dubbed the "pearl island", more than half of Phu Quoc's area has been preserved as a UNESCO Biosphere Reserve.
Travel+Leisure suggested that tourists buy fish sauce at traditional fishing villages like Ham Ninh where they can enjoy the fresh seafood.
In addition to Phu Quoc, the list consists of many other famous destinations with unspoiled ecosystems, scenic beauty or rich cuisine such as Alberta (Canada), AlUla (Saudi Arabia), Fukuoka (Japan) and Malta.