Off-grid and eco-conscious resorts are par for the course in Costa Rica. One of the newer adults-only options that cares for the earth almost as much as it cares for the guests is Hotel Three Sixty, a 12-villa property set atop a 58-acre rainforest reserve. It's bursting with biophilic design elements like living walls, open architecture to better see the surrounding emerald canopy and, the piece de resistance, the lobby's rain-fed water feature made of local stones.

The living areas take up less than 8% of the acreage, and guests are encouraged to wander the jungle trails to commune with nature and see some of the types of trees planted through a partnership with One Tree Planted. If you're truly lucky, you might even see some of the creatures that benefit from the reforestation, including white-faced Capuchin monkeys, yellow-throated toucans, glass frogs and giant anteaters. For every night of your stay, the hotel will plant one tree somewhere in the country's highlands, lowlands or mangroves.

Also in practice here: grey water reuse, irrigating with collected rain, green cleaning products, biodegradable bath products by Costa Rican company Raw Botanicals, a no-pesticide policy, and a food-and-beverage program that is locally sourced, organic and sustainable.