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Highlights of this area include the vibrant city of Danang, the former imperial capital of Hue, and the very popular but undeniably stunning historic port town of Hoi An. The best beach scenes are at An Bang near Hoi An and Lang Co near Danang, and for nature fans there is good hiking and birdwatching in Bach Ma National Park. Ancient Cham history is fascinating at My Son, and the compelling Demilitarised Zone (DMZ) showcases the poignant and tragic stories of the American War.

Northeast Vietnam includes Halong Bay, one of the region's biggest draws. Reasons to linger after your boat trip include the lesser-known but stunning Bai Tu Long Bay, the intersection of nature and culture that is Ba Be National Park, the otherworldly karst landscapes outside of Cao Bang and the urban options in Haiphong.

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.

Plonked about midway between My Tho and Can Tho, Vinh Long is a major transit hub and the capital of the province. For travelers, it's a gateway to island life, Cai Be floating market, abundant orchards and rural homestays.

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.

A popular weekend escape from HCMC, Vung Tau rocks at weekends when beach-starved locals and expats descend in numbers, but it is relatively quiet during the week. The city enjoys a spectacular location on a peninsula, with ocean on three sides; the light and sea air make it a refreshing break from sultry Saigon.

Northern Vietnam's most appealing city has a distinctly laid-back air with its tree-lined boulevards host to a bundle of colonial-era buildings. Caffeine-aficionado heaven, the central area buzzes with dinky cafes where tables spill out onto the pavements – perfect for people watching.

Dong Hoi is a pleasantly untouristed port and seaside town. It enjoys an attractive location, clinging to the banks of the Nhat Le River, and has beaches to the north and south. Recently established air links to Haiphong (for Halong Bay and Cat Ba Island) and the northern Thai city of Chiang Mai promise to significantly increase the city's appeal as a destination. Dong Hoi also has excellent transport links to the Phong Nha region.

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.

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.