Not content to rest on their green throne, the owners of the 13-year-old Pacuare Lodge built a new 6,450-square-foot, open-air main lodge last summer. Hidden in 25,000 acres of rainforest next to the Pacuare River, this place is the archetypal greener-than-thou eco-retreat, which kind of makes us want to hate it. But while Pacuare is off-grid, the accommodations are decidedly comfortable. Guests relax in hammocks on pine decks overlooking the Pacuare, Costa Rica's premier rafting river. And the new lodge features an organic tea bar, a honeymoon suite made of native rainforest hardwood, and an extensive wine cellar. (Try the Navarro Correas Private Collection Malbec, shipped from Argentina.)

GREEN-O-METER: 4.5
The only sin is that 1,000-bottle wine cellar. They deserve it.

ACCESSIBILITY: 2
You can't drive there if you want to. Visitors arrive by raft from Linda Vista, 55 miles from San José. From $326 per person; pacuarelodge.com