South American adventures can be found on and off the beaten track. Experience the mosaic of fragile, ancient ecosystems with jungle walks, river cruises and eco-tours in the Amazon River Basin, which takes glory as the largest rainforest in the world. Dive into the Galapagos Islands for a wildlife encounter with sea lions, giant tortoise and iguanas, or witness the natural power of the Iguassu Falls with a boat trip beneath the torrents (wet weather ponchos will not do you any good here!).