One of the major rivers of the Iberian Peninsula, the Douro in north-central Spain and Portugal just might be the world's most beautiful wine region. Most of the river on the Spanish side isn't navigable, so river cruises generally travel roundtrip from Porto, on the coast of the Atlantic.

Jūrmala, Latvia’s famed seaside resort, stretches along 33 kilometers of white sandy beaches kissed by the Baltic Sea. Its wooden architecture, featuring colorful villas from the early 20th century, tells the story of its history as a retreat for the well-to-do during the Russian Empire. Visitors strolling the Jomas Street promenade will find a lively atmosphere filled with cafes, boutiques, and galleries, alongside peaceful spots where the sea breeze encourages relaxation.

Lake Powell, stretching across the Utah-Arizona border, is one of the largest manmade reservoirs in the United States. Formed by the flooding of Glen Canyon after the completion of the Glen Canyon Dam in 1963, it covers over 180 miles in length and contains nearly 2,000 miles of shoreline, more than the entire West Coast of the U.S. Despite its modern origins, the area has long been home to the Ancestral Puebloans and later Navajo communities.

Swakopmund, on Namibia’s Atlantic coast, is a town where desert meets ocean in striking contrast. Founded by German colonists in the late 19th century, its streets are lined with colonial-era buildings painted in pastel colors, giving the town a distinctly European feel.

One visit to Tsingy de Bemaraha National Park in Madagascar and you may find yourself feeling like you have stepped onto another planet. The mineral forest was formed nearly 200 million years ago and has become a popular destination for adventurous hikers from around the world. The hanging bridge, while not for the faint of heart, is one of the most photographed spots within the park.