Iguazú Falls, Argentina and Brazil

To better accommodate the millions who visit Iguazú Falls, a UNESCO site of 275 mighty waterfalls straddling the border of Argentina and Brazil, nearby Cataratas del Iguazú Airport is being modernized and enlarged. Within Iguazú National Park, the Ecological Jungle Train, which takes visitors on a 25-minute journey to the epic Devil’s Throat cascade, is converting from gas to environmentally friendly electric trains. Starting this February, travelers will be able to bed down at the long-awaited Awasi Iguazú resort where 14 rainforest villas will each have plunge pools and guests will have access to a personal excursion guide and 4WD vehicles. Expect visits to native Guarani tribes, river kayaking, and jungle treks led by a resident biologist. Selvaje, an upscale 12-room lodge, will also open early this year and will offer a menu of couple-friendly activities, from picnics to spa treatments. For the ultimate in romance, though, Argentinean travel outfitter Mai 10 (run by Travel + Leisure A-List Agent Maita Barrenechea) can arrange private dinners alongside the falls under the light of a full moon.