Argentina

Wander the tree-lined streets of Recoleta and Palermo, past Belle Époque mansions and leafy plazas, before catching a performance at the ornate Teatro Colón, one of the world's great opera houses. In San Telmo and La Boca, tango spills out of milongas and onto cobblestone streets, while the city's parrillas serve some of the best beef in the world late into the night. Buenos Aires rewards travelers who linger, with a rhythm that rarely slows before 2 a.m.

Argentina's premier wine region sits at high altitude in the rain shadow of the Andes, where intense sun and cool nights produce deeply concentrated reds. Tour boutique bodegas and family-run vineyards, many with mountain views and open-air tasting rooms, and pair a flight of Malbec with a traditional asado lunch. Beyond the vines, the surrounding foothills offer horseback riding, white-water rafting, and some of Argentina's best stargazing skies.

The Perito Moreno Glacier, a 19-mile river of ice that calves directly into Lago Argentino, is one of the few glaciers in the world still advancing rather than retreating, and one of the most accessible: walkways bring visitors within view of its cracking, thundering face. Further north, the granite towers of Fitz Roy and Cerro Torre draw hikers to the trails around El Chaltén, Argentina's trekking capital. Condors, guanacos, and endless steppe fill the spaces in between.

Larger and, by most accounts, more spectacular than Niagara, Iguazu Falls stretches nearly two miles along the Iguazu River, framed by subtropical rainforest alive with toucans, coatis, and butterflies. Catwalks on the Argentine side lead directly over the Devil's Throat, the falls' most dramatic horseshoe-shaped chasm, where mist rises hundreds of feet into the air. A boat ride to the base of the falls is not for those who want to stay dry.