Córdoba, located in the heart of Andalusia, was once the most advanced city in Western Europe. During the 10th century, it served as the capital of Al-Andalus and was a center for learning, science, and art. Today, visitors walk the same streets that philosophers, poets, and physicians once crossed. The city’s most famous landmark, the Mezquita-Catedral, reflects its layered past. The red and white horseshoe arches inside are one of the most photographed interiors in Spain.

Somalia, located on the Horn of Africa, is a land defined by its coastline, culture, and long history as a crossroads of trade. With the Indian Ocean and Gulf of Aden shaping much of its identity, Somalia has one of the longest coastlines in Africa, stretching over 1,800 miles.

Sandakan, on the northeast coast of Sabah in Malaysian Borneo, is a city where history, wildlife, and culture come together. Once a major trading port known as “Little Hong Kong” for its bustling connections to the wider world, Sandakan has retained its multicultural character, with influences from Chinese, Malay, and Indigenous communities visible in its temples, markets, and cuisine.

Originating as a tiny fishing village in 1038, modern Kehl has become an important link between Germany and France. Rhine River cruises most often use Kehl as their gateway to the much larger and better-known Strasbourg. The savvy traveler, though, might choose to skip the jaunt across the river and enjoy many similar sights, shopping and cuisine as those offered in the teeming French city.

Pennsylvania offers more than just a glimpse into American history, it invites travelers to walk through it. In Philadelphia, the Liberty Bell still draws visitors from around the world, while Independence Hall, a UNESCO World Heritage Site, is where both the Declaration of Independence and the U.S. Constitution were debated and signed. Just a short walk away, modern museums like the National Constitution Center offer hands-on exhibits that connect the past to today’s civic questions.