excursions. Some cover lengthy trips such as a cruise on the Danube that passes through ten countries from its source before emptying into the Black Sea; others are shorter but have a strong, unifying theme, such as Portugal's Douro River that was built on viticulture. In Southeast Asia, the leisurely pace of a river trip along the Yangtze, Mekong or Ayeryawaddy Rivers allows time to take in the ancient cultures and exotic landscapes. Beautiful countryside, wine-rich valleys and dramatic gorges are the highlights of a river journey; the scenery is constant and ever changing. But as well as the natural wonders, there are also remarkable man-made engineering feats to experience as you pass through intricate lock systems or under state-of-the-art bridges. All the important landmarks and cities, scenery and architecture are described for each journey, and each one is illustrated with a route map.