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Mustiga nudelkok, frasiga rispannkakor, färskpressad passionsfruktjuice och vidunderlig cao lau. Vi reser från södra till norra Vietnam och testar Asiens bästa street food.

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.

Dalat is an alternative Vietnam: the weather is spring-like instead of tropical hot, the town is dotted with French-colonial villas rather than socialist architecture, and the surrounding farms cultivate strawberries, coffee and flowers instead of rice.

This eponymous provincial capital isn't unpleasant; the climate is mild, and winter days can bring a chilly welcome relief from the heat when a thick fog clings to the banks of the Bang Giang River. But you'll most likely use the city as a base to explore rural Cao Bang province, one of the most beautiful regions in Vietnam.

The epicentre of the Mekong Delta, Can Tho is the largest city in the region and feels like a metropolis after a few days exploring the backwaters. As the political, economic, cultural and transportation centre of the Mekong Delta, it’s a buzzing town with a lively waterfront lined with sculpted gardens, an appealing blend of narrow backstreets and wide boulevards, and perhaps the greatest concentration of foreigners in the delta. It is also the perfect base for nearby floating markets, the major draw for tourists who come here to boat along the many canals and rivers leading out of town.

Wow, the vistas. This is Vietnam's big-sky country; a place of rippling mountains, cascading rice terraces and the winnowed-out karst topography for which the region is famed.

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.

Just off the Danang Beach coastal road, the Marble Mountains (Ngu Hanh Son) consist of five craggy marble outcrops topped with pagodas. Each mountain is named for the natural element it’s said to represent: Thuy Son (Water), Moc Son (Wood), Hoa Son (Fire), Kim Son (Metal or Gold) and Tho Son (Earth). The villages that have sprung up at the base of the mountains specialise in marble sculpture, though they now astutely use marble from China rather than hacking away at the mountains that bring the visitors in.

With its river setting and relatively traffic-free streets, relaxed Kon Tum makes a great stop for travelers intent on exploring the surrounding hill-tribe villages, of which there are 700 or so dotting the area – mostly Bahnar, but also Sedang and Jarai. This is a far better base than Pleiku for delving into indigenous culture, and there are a few intriguing sights in Kon Tum itself.