Delfin II

Where It Sails: The Peruvian Amazon

Why It Rocks:  This intimate 28-passenger ship from Lindblad Expeditions is cruising's version of glamping. After exploring the jungle with naturalist guides to spot sloths, pink dolphins, and monkeys, you'll return on board to quality cuisine and spacious suites with air-conditioning — meaning you'll never have to rough it on your adventure.