The Sepik River is one of two vast tropical river systems in Papua New Guinea that meander through the densely forested lowlands of the world's second largest - and the world's tallest - island. Along the banks of the river and its many tributaries live sparsely scattered, remote villages scarcely contacted by the outside world, where people live a lifestyle that has changed little for thousands of years.

The Mekong Sun is the first river cruise boat designed to operate on the unpredictable waters of the upper Mekong between Chiang Saen in northern Thailand in the heart of the Golden Triangle, to the royal city of Luang Prabang and the Laotian capital, Vientiane.

Gently cruise the River of Kings, the Chao Phraya, between Bangkok and Ayutthaya, Thailand's former capital, aboard a beautifully converted teakwood rice barge, and watch history unfold.

In Thailand's north east, the Mighty Mekong River forms a border between the country's least developed and most unspoiled region, Isaan, and the exotic landlocked country of Laos.