Coursing through 10 countries, the Danube is the second-longest river in Europe. This waterway, lined with fortresses and castles, rises in Germany's Black Forest and runs for 1,770 miles to the Black Sea. The Danube is an essential commercial thoroughfare for central and southeastern Europe, and several river cruise companies sail vessels on it year-round. Destinations along this river include Vienna, Budapest, Passau and Bratislava.

Nestled in the heart of Italy, Umbria is often called the "Green Heart of Italy" due to its lush landscapes and rolling hills. This region offers visitors a tranquil escape from the bustling cities, with medieval hilltop towns, rich history, and exceptional cuisine. Perugia, Umbria's capital, is a cultural hub known for its well-preserved Etruscan history, including the Etruscan Well and Arco Etrusco, a gateway dating back to the third century BC.

Welcome to England. The green hills, the noble woodlands, the perfect flowering of architecture and remarkable cultural heritage beckon visitors from around the globe.

Cagliari is Sardinia's capital and largest city. Several civilizations have left their imprint here architecturally and culturally. Must-sees include the Museo Archeologico Nazionale di Cagliari, with its Roman and Byzantine treasures, as well as Castello, a medieval quarter situated on a hill above the city. The city is also known for its food and vibrant nightlife.

Scoresby Sund (Kangertittivaq in Greenlandic), on the eastern coast of Greenland, is the largest and longest fjord system in the world. On the northern side of the fjord's mouth sits Ittoqqortoormiit, the only permanent settlement in the region and home to less than 500 residents. The region is well-known for its Arctic flora and fauna.