This 2,000-year-old city, where the Teutonic Order founded one of its first commanderies in the 13th century, lies on the convergence of the Moselle and Rhine Rivers. Hop on a cable car, one of the city's most popular attractions, for stunning city-wide views, or cruise down the Rhine to spot some of Koblenz's magnificent fortresses and castles, including the Ehrenbreitstein Fortress and Schloss Stolzenfels.

Marathon, located near the center of the Florida Keys, is a vibrant island city known for its fishing, boating, and tropical charm. Nestled between Key Largo and Big Pine Key, Marathon is surrounded by clear waters, coral reefs, and sandy beaches, making it a prime destination for water-based recreation.

Located northwest of Cairo on the Mediterranean coast, Alexandria is one of Egypt's most spectacular cities and an important historical, industrial, and economic center for the country.

St. Thomas, the gateway to the U.S. Virgin Islands, is a vibrant mix of history, culture, and Caribbean charm. Its capital, Charlotte Amalie, features a waterfront lined with pastel-colored colonial buildings, narrow cobblestone streets, and historic forts such as Fort Christian, which offer glimpses into the island’s Danish colonial past.

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.