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.

The biggest island in the Philippines, Luzon is also one of the most diverse—it’s where mountain peaks and volcanoes meet miles of coastline, and indigenous culture melds with Spanish colonial history. You can relax at the beach in Pagudpud, hike with locals up the Batad Rice Terraces, ride in a horse-drawn carriage in Vigan, and snack on street food and dance the night away in Manila. You’ll need a few days and a bus pass, but you’ll be glad you stayed.

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.

Delectable dim sum, floating islands, and a one-of-a-kind skyline are just some of Hong Kong’s unique features. Get an eyeful of traditional Chinese architecture in Ngong Ping village, then take the tram to the tippity-top of Victoria Peak for unparalleled views. The rocks and gentle hills of Nan Lian Garden will bring you inner peace, as will a calming cup of tea in a Stanley café. Become one with everything at the Chi Lin Nunnery, a serene Buddhist complex.

Golden palaces, floating markets, majestic porcelain-laid spires…you've never seen a capital city quite like Bangkok. Visit Pratunam or Siam Square for premium shopping, then unwind in the European-style gardens of Dusit. Thon Buri is home to the awesome Wat Arun temple, and over in Phra Nakhon, you’ll find the Wat Pho temple of the Reclining Buddha. Savor mango sticky rice at a food stall before taking in the gilded splendor of the Grand Palace.