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Established as a hill station by the French colonialists in 1922, Sapa today is the tourism centre of the northwest.

Ancient Hanoi preserves the best parts of French and Chinese culture and architecture, and weaves it all into the modern world with youthful Vietnamese verve. If that gets too boisterous, two nearby national parks offer clean mountain air, rare plant life and animal-spotting opportunities. At Tam Dao Hill Station the weather is cool year round, while Ba Vi National Park offers hiking through atmospheric mist to a mountaintop temple.

Pronounced ‘hway’, this deeply evocative capital of the Nguyen emperors still resonates with the glories of imperial Vietnam, even though many of its finest buildings were destroyed during the American War.

Fringed with white-sand beaches and with large tracts still cloaked in dense tropical jungle, Phu Quoc rapidly morphed from a sleepy island backwater to a must-visit beach escape for Western expats and sun-seeking tourists. Beyond the resorts lining Long Beach, rapid development beginning on the east coast and mega resorts in sight of Sao Beach, there's still ample room for exploration and escaping the sometimes littered waters. Dive the reefs, kayak in the bays, eat up the back-road kilometres on a motorbike or just lounge on the beach, followed by a massage and a fresh seafood dinner.

Isolated from the mainland, the Con Dao islands are one of Vietnam's star attractions. Long the preserve of political prisoners and undesirables, they now turn heads thanks to their striking natural beauty. Con Son, the largest of this chain of 15 islands and islets, is ringed with lovely beaches, coral reefs and scenic bays, and remains partially covered in tropical forests. In addition to hiking, diving and exploring deserted coastal roads there are excellent wildlife-watching opportunities, such as the black giant squirrel and endemic bow-fingered gecko.

Tay Ninh town, the capital of Tay Ninh province, serves as the headquarters of one of Vietnam’s most intriguing indigenous religions, Cao Daism. The Cao Dai Great Temple at the sect’s Holy See is one of Asia's most unusual and astonishing structures. Built between 1933 and 1955, the temple is a rococo extravaganza blending the dissonant architectural motifs of a French church, a Chinese temple and an Islamic mosque.

Cat Tien comprises an amazingly biodiverse area of lowland tropical rainforest. The 72,000-hectare park is one of the outstanding natural treasures in Vietnam, a true jungle, and the hiking, mountain biking and birdwatching here are the best in the south of the country. At weekends and public holidays it gets busy with domestic tourists – it's worth calling ahead to book the most popular excursions.

Designated a Unesco World Heritage Site in 2003, the remarkable Phong Nha-Ke Bang National Park contains the oldest karst mountains in Asia, formed approximately 400 million years ago. Riddled with hundreds of cave systems – many of extraordinary scale and length – and spectacular underground rivers, Phong Nha is a speleologists’ heaven on earth.

Welcome to an alternative reality populated by European royalty, film stars and the otherwise rich and secretive. For the average punter not able to afford an uber-luxurious hotel, this place doesn’t exist. Well, at least not before 2017, when the mother-of-all flashpacker retreats opened here on a private bay.

Just 3km north of Hoi An, An Bang is one of Vietnam’s most happening and enjoyable beaches. At present there's a wonderful stretch of fine sand and an enormous horizon (with less of the serious erosion evident at Cua Dai), and with only the distant Cham Islands interrupting the seaside symmetry. Staying at the beach and visiting Hoi An on day trips is a good strategy for a relaxing visit to the area.