From Buenos Aires, take a simple day trip to the delightful town of Colonia del Sacramento in Uruguay. Board a 75-minute ferry across the Río de La Plata to arrive early, allowing you ample time to wander the cobblestone streets, join a walking tour, shop in the quaint downtown area, and savor a delicious meal.

Fimmvörðuháls is an epic, "must do," Iceland hike featuring over two dozen waterfalls. Begins at Skogafoss falls in the South Island.