Barca d'Alva sits quietly along the Douro River, right at Portugal’s eastern border with Spain. Once the final stop on the historic Douro railway line, this riverside village remains relatively untouched by mass tourism. The surrounding landscape filled with terraced vineyards, olive groves, and almond trees form part of the UNESCO-listed Alto Douro Wine Region.

Medieval city with walls, defense towers and several churches. Every August, a medieval week is held, with jousting, food and authentic wardrobes.

Barranquilla sits near the mouth of the Magdalena River on Columbia's Caribbean side. It is a major seaport and a center of commerce, but everyone breaks loose for four days in February for one of the liveliest carnivals outside of Rio.

Midway between Salzburg and Vienna, Linz boasts beautiful Baroque buildings, including Old Town Hall and the Old Cathedral, Alter Dom.

Tennessee welcomes visitors with a rhythm that shifts from Appalachian mountain towns to Memphis blues clubs, all while telling stories that have shaped the American experience. In East Tennessee, the Great Smoky Mountains National Park is the most visited national park in the country, known for its mist-covered peaks, preserved log cabins, and seasonal displays of wildflowers and fireflies.