Evidence of our nation's birth abounds in Boston, a hub of revolution that is essentially the oldest city in the United States. Visitors are compelled to walk the 2.5-mile Freedom Trail around the city center, and bear witness to 16 historical locations related to the history of America.

Alter do Chão is a riverside village in the Brazilian state of Pará, on the banks of the clear Tapajós River. Though part of the larger municipality of Santarém, Alter do Chão has its own rhythm and identity, known far beyond Brazil for the white-sand beaches that appear when river levels drop between July and December. One of the most famous spots is Ilha do Amor (Love Island), a sandbar just off the village shore that feels almost like a hidden world of warm water and bright sky.

Belgium may be compact, but it offers a surprising variety of experiences shaped by centuries of shifting borders, artistic innovation, and culinary tradition. In Brussels, the Grand Place sets the stage for history and architecture in one square lined with ornate guild halls. The city is also home to the European Union’s headquarters, surrealist painter René Magritte’s former house, and a lively comic book trail that winds through murals of Tintin and other Belgian icons.

Ohio offers a blend of surprises that range from ancient earthworks to world-class roller coasters. In the southern part of the state, the newly designated Hopewell Ceremonial Earthworks tells the story of a sophisticated Native American culture that built massive geometric mounds over 2,000 years ago. Visitors can walk among these quiet, grassy structures and learn how they were used for ceremonies, astronomy, and social gatherings long before European contact.

Khndzoresk is a village in Armenia's Syunik Province, near the town of Goris, known for a deep gorge containing an extensive historic cave settlement. Old Khndzoresk developed along the steep sides of the gorge, where natural cavities were enlarged and adapted into homes, storage spaces, stables, and other parts of a community.