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.

Hiroshima, a city on Japan’s Honshu Island, is a place where history and resilience intertwine to create a destination that is both deeply moving and inspiring. Beyond its historical significance, Hiroshima offers visitors a vibrant cultural scene.

The third largest city in Turkey, a cosmopolitan and lively city all year round, during the International Arts Festival (June/July) and the international Fair (August/September), Izmir bursts with an added vibrancy.

Perugia, the capital of Italy’s Umbria region, is a city built across hills and centuries. Originally settled by the Etruscans more than 2,500 years ago, it still holds remnants of their civilization, including one of the largest surviving Etruscan arches in Italy named Arco Etrusco, which greets visitors at the city’s entrance. Walking through the narrow streets of the historic center reveals layers of Roman, medieval, and Renaissance architecture, all woven together within ancient stone walls.

Astoria, Oregon is the state's oldest city. Located on the Columbia River near the Pacific Ocean, Astoria is rich in history, including fishing, canning and the Lewis and Clark Expedition.