Once the capital of the Mughal Empire, Agra, India is now a cultural capital replete with famous landmarks and striking architecture. The city’s most prominent draw is the magnificent Taj Mahal, the iconic white marble mausoleum and a UNESCO World Heritage Site visited by millions of people each year.

Tampico, located on the Gulf Coast of Tamaulipas, is a port city with a layered history shaped by trade, oil, and immigration. Its downtown district is known for neoclassical buildings, many of which were constructed with imported bricks and ironwork from Europe during the oil boom of the early 20th century. One of Tampico’s most photographed structures is the Mercado Municipal, rebuilt in recent years but still functioning as a central hub for daily life.

Coa Valley lies in northeastern Portugal near the Douro River, in a landscape shaped by steep hills, schist cliffs, vineyards, olive groves, and almond trees. The area is best known for its open-air prehistoric rock engravings, spread across the banks of the Coa River and protected as a UNESCO World Heritage Site.

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.

Tromsø, a gem nestled in the Arctic Circle, offers an unparalleled blend of natural wonders and cultural richness. Known as the "Gateway to the Arctic," this Norwegian city is famed for its spectacular Northern Lights. Between September and April, Tromsø becomes a prime location for witnessing the aurora borealis, a mesmerizing display of green, purple, and pink lights dancing across the polar sky.