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With 307 species of bird, 133 species of mammal, 122 species of reptile and more than 2000 species of plant, Cuc Phuong National Park is one Vietnam’s most important protected areas.

The ‘rice bowl’ of Vietnam, the delta is carpeted in a dizzying variety of greens. It's a water world that moves to the rhythms of the mighty Mekong, where boats, houses and markets float upon the innumerable rivers, canals and streams that criss-cross the landscape like arteries.

This really is a tale of two cities: Phan Rang hugging the shoulders of Hwy 1 and Thap Cham straddling Hwy 20 as it starts its long climb to Dalat. Anyone travelling Vietnam from north to south will notice a big change in the vegetation when approaching the joint capitals of Ninh Thuan province. The familiar lush green rice paddies are replaced with sandy soil supporting only scrubby plants. Local flora includes poinciana trees and prickly-pear cacti with vicious needles.

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.

Rugged, craggy and jungle-clad Cat Ba, the largest island in Halong Bay, has experienced a tourism surge in recent years. The central hub of Cat Ba Town is now framed by a chain of low-rise concrete hotels along its once-lovely bay, but the rest of the island is largely untouched and as wild as ever. With idyllic Lan Ha Bay just offshore, you'll soon overlook Cat Ba Town's overdevelopment.

Gateway to the Mekong Delta, My Tho is the capital of Tien Giang province and an important market town – although for the famous floating markets, you’ll need to continue on to Can Tho.

With limestone outcrops amid serene rice paddies, Tam Coc is best appreciated on a languorous rowing-boat ride, with the soundtrack of the river lapping against the oars.

Often referred to as the Ba Be Lakes, Ba Be National Park was established as a national park in 1992. The scenery here swoops from limestone mountains peaking at 1554m down into plunging valleys wrapped in dense evergreen forests, speckled with waterfalls and caves, with the lakes themselves dominating the very heart of the park.

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.

Yok Don nationalpark i södra Vietnam ska istället erbjuda etisk elefantturism.