Beware. Once the magic of South America grips you, it owns you. From the crashing glaciers of Patagonia to the steaming Amazon jungles, the South American continent is so fantastically diverse and packed with adventure, you'll forever wonder what's coming next. Strap on your crampons and climb the snowcapped volcanoes of the Andes. Trek the Inca Trail to the awe-inspiring remains of Machu Picchu, marvel at the colonial architecture of Cartagena, let loose to the hedonism of Brazil's Carnaval, doze to frog songs in the Amazon and wake up to the thundering magnificence of Iguazú Falls.