Quetzaltenango, often called Xela by locals, is Guatemala’s second-largest city and a hub of indigenous culture, colonial history, and highland landscapes. Surrounded by volcanoes, including the towering Santa María, the city sits at over 7,600 feet above sea level, giving it a crisp mountain climate that contrasts with the country’s tropical lowlands.

The capital city of the Dominican Republic is rich in history and beauty, boasting 16th-century Spanish architecture and the oldest cathedral in the Americas. The narrow streets of the old colonial city are a testament to the complex mixture of forces that contributed to the construction of the first European city in the Western Hemisphere.

Burgos, located in northern Spain, is a city where medieval heritage is still part of daily life. At its heart stands the Burgos Cathedral, a UNESCO World Heritage Site and one of the most striking examples of Gothic architecture in Europe. Construction began in 1221 and continued for over 300 years, resulting in a cathedral that features elaborate spires, stained glass, and the tomb of El Cid, Spain’s legendary military leader.

Even though Linköping has developed into an industrial center and is Sweden's fifth-largest city, it maintains a small-town atmosphere. Old Linköping is the restored town center with preserved buildings from the 18th and 19th centuries. The tower of the impressive Linköping Cathedral, which took nearly 300 years to complete, can be seen from a distance of more than 10 kilometers.

Riyadh blends stories from centuries with modern splendor. At its core stands Al Masmak Fortress, built of clay and mud-brick in the 19th century. It was the site that set the stage for the unification of Saudi Arabia. Today, it’s a museum that preserves weapons, historical displays, and accounts of that pivotal moment. Adjacent to the fortress, the Souq Al-Zal offers spices, traditional jewelry, and handmade crafts, connecting visitors to the city’s past through its alleyways.