The Blue Mountains are named for the delicate azure haze that lingers along the region, which is actually a fine cloud of oil emitted by eucalyptus trees. The mystical mountains are a labyrinth of plateaus, gorges and gum trees. Check out the Katoomba Scenic Railway (the steepest railway in the world), the Jenolan Caves and the Giant Staircase nature walk.

You can fit a lot into a visit to Australia’s capital city. Surrounded by nature parks, Canberra is best known for a vast collection of history and culture that provides a snapshot of the nation. Discover precincts housing, thriving local arts and foodie scenes, family friendly attractions, outdoor experiences and the acclaimed cool-climate wineries that dot the surrounding area.

Byron Bay's beaches are dotted with lighthouses and surrounded by bottlenose dolphins, rays, whales and sea turtles. This former New South Wales whaling station turned tourist town is still strongly influenced by its recent bohemian past, when hippie lifestyles flourished. Bongos and didgeridoos sound in parks, sarongs and dreadlocks are common, and vegetarian restaurants abound. Give in to the casual vibe and stroll between beaches and bars for a low-key and happy day.

Lovely, laid-back Melbourne has something for everyone: family fare, local and international art, haute boutiques, multicultural dining, Australian and Aboriginal history, spectator sports, and pulsing, swanky nightlife. Cruise on the free City Circle Tram loop to check out unique attractions like the Royal Botanical Gardens and the Healesville Sanctuary, which buzzes with local animal species.

Vietnam's bustling largest city sets the cultural and economic pace for the country. The former Saigon boasts charming French colonial architecture and wide boulevards, usually thronged and choked with traffic. Taxis are an option for seeing the sprawling city. The War Remnants Museum shows the Vietnam War through Vietnamese eyes. Don't miss the impressive Jade Emperor Pagoda. Go to the frenetic Ben Thanh Market for food, flowers or frogs. Tour through the Mekong Delta, past rice paddies and houseboats.

Phuket offers a rainbow spectrum of spectacular holiday sights from blue lagoons and pink sunsets to orange-robed monks. Three wheeled-Tuk Tuks, taxis, buses and long tailed boats transport visitors between these marvels. Phuket's south coast offers its most popular beaches. The north is more tranquil. Koh Phi Phi, Phang Nga Bay and Patong Beach are popular spots. Diving, snorkeling, wind surfing and sailing are just a few active options. Inland, forested hills, mountains and cliffs wait to be explored.

A visit to Pattaya is a wonderful way to explore the beaches along the Gulf of Thailand. Relaxed and family-friendly Jomtien Beach is a hot spot for watersports and seaside massages. The giant Buddha of Wat Khao Phra Bat keeps watch over the city, and the wooden Wang Boran Sanctuary of Truth pays homage to Buddhist and Hindu art and architecture. At night, tons of bars and strip clubs attract an adults-only crowd.

Bangkok is full of exquisitely decorated Buddhist temples—as you go from one to the next you’ll be continually blown away by the craftsmanship and elabourate details. But if you’d rather seek enlightenment in a gourmet meal, or dance the night away, you’ll also enjoy Bangkok—the restaurant and nightclub scenes here are among the best in the world.

The charming Vietnamese capital has aged well, preserving the Old Quarter, monuments and colonial architecture, while making room for modern developments alongside. Hanoi may have shrugged off several former names, including Thang Long, or "ascending dragon", but it hasn't forgotten its past, as sites such as Ho Chi Minh's Mausoleum and Hoa Lo Prison attest. Lakes, parks, shady boulevards and more than 600 temples and pagodas add to the appeal of this city, which is easily explored by taxi.