Peru is recognized as a world class destination for white water rafting, making Cuzco, for all intents and purposes, its capital. That said, the jewel in Cuzco's rafting crown may just be Rio Apurimac. The source of the mighty Amazon, this tumultuous river combines the region's toughest white water rafting with the kind of canyon-strewn scenery you can only find in south central Peru. We're talking twice as deep as the Grand Canyon in parts.
Unless you're going with a trusted guide, these waters are best kept for seasoned rafters/kayakers only, with rapids that vary from Class III+ to Class V. Aside from the heart-pounding thrills, narrow runs between massive canyon walls, plentiful beaches for camping, and wildlife including otters and bobcats make the experience one you won't be forgetting anytime soon. Be prepared to commit at least 3-4 days and at least $550 USD for a guided excursion, as most tour companies don't offer short routes. All in all, however, we'd be hard pressed to say it's not worth every cent (and minute) of the investment.