Take in the lush, volcanically active landscape of Bali while whitewater rafting on the Ayung and Unda rivers. Or get the heart pumping off-shore with an ocean-rafting sightseeing and snorkeling tour in boats that reach 44 miles per hour. Surfers hit the island's western side for big-time swells.
Thailand takes adventure to another level. The south's beaches and islands offer sea kayaking, cave abseiling and climbing on stunning limestone stacks that rise from the Andaman Sea. Jungle treks and canopy tours await inland. In the north, mountains and rain forest backdrop exhilarating outdoor adventures.
Perched in a high mountain valley, Huanglong or Yellow Dragon National Park offers invigorating adventure options. The ambitious can trek to Lhasa, whitewater raft or embark on multi-day river journeys. Alternatively, a five-mile trot brings you to five terraced, temple pools glowing with stunning hues.
Vietnam's famed jungles are amazingly alive. Jungle trekking reveals a near unimaginable wealth of flora and fauna. Nowhere offers more creature encounters than the country's oldest national park, Cuc Phuong, home to a staggering 43 biodiversity hotspots and over 300 types of rare tropical birds.
Set your own pace by cycling through Khmer ruins at Angkor Wat or pedaling the banks of the mighty Mekong. Trek off the beaten path on eco-adventures through the Cardamom Mountains, southern tropical islands or crater lakes of the remote northeast. Add urban adventure and hire a "motodop" taxi in Siem Reap.
When it comes to mountain climbing, Nepal is the big one, but the home of the world's highest peak has got a lot more to offer than mighty Everest and its neighboring summits. The Himalayan kingdom also offers excitements such as the stunning Annapurna trek, wildlife jungle safaris, rafting and paragliding.
Pristine, remote Bhutan teems with turbulent mountain torrents and broad rivers that glide slowly past medieval monasteries, hilltop fortresses and terraced fields. Kayak or raft through this Himalayan wonderland or give your legs the workout and mountain bike through profusions of flowers on ancient mule trails.
Kota Kinabalu on the island of Borneo is the bustling gateway to acclaimed Kinabalu National Park. The park's high point is 13,400-foot Mount Kinabula, Malaysia's tallest peak, a mecca for climbers. Ninety miles away, thrilling jungle trekking and camping await in the Crocker Range National Park.