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.

Tucked between Jordan's sandstone cliffs in the southwestern desert, Petra was carved directly into rose-colored rock more than 2,000 years ago. Visitors approaching through the narrow gorge known as the Siq are rewarded with their first glimpse of Al-Khazneh, the Treasury, a towering facade that seems to appear from another world.

Douala is Cameroon’s largest city and its economic powerhouse, but beyond the busy ports and bustling streets lies a city full of creativity, flavor, and unexpected charm. Located on the Atlantic coast, Douala has long served as a crossroads of cultures. The city's waterfront, especially along the Wouri River, is a great place to watch the movement of boats, local fishermen, and floating markets while soaking in the tropical coastal air.

Egypt is a land of timeless wonders, where ancient history meets modern vibrancy. The Great Pyramids of Giza, the Sphinx, and the Temple of Karnak are just a few of the awe-inspiring monuments that attract millions of tourists each year.

Syros, the capital of the Cyclades, stands apart from its island neighbors with its blend of neoclassical architecture, Orthodox and Catholic traditions, and year-round local life. Ermoupoli, the main town, was once a thriving 19th-century port and still displays its legacy through grand mansions, marble-paved squares, and the imposing Apollo Theater which was designed by an Italian architect and often referred to as a miniature La Scala.