Just south of Kyoto, Osaka is one of Japan’s largest cities and a cultural hub known for its spectacular culinary scene. Highlights of this sprawling and lively city include majestic Osaka Castle, whose tiers of white and green tower over Nishinomaru Garden’s blooming pink cherry trees, as well as the Shitennoji Buddhist temple, Osaka Aquarium Kaiyukan, and ever-popular Universal Studios Japan.

Southeast Spain's seaport of Cartagena is a large naval base on the Mediterranean coast. The city was founded in 220 B.C. and boasts Roman ruins, mosaics and murals.

A tributary of the Rhine, the Moselle River flows through France, Luxembourg and Germany. The Moselle also lends its name to a region of France, a valley which it bisects, and a wine produced along its banks.

This pleasant port town provides a nice, calmer contrast to bustling Rome, so travelers are advised to not simply pass through, but linger and discover more of Civitavecchia. Explore Forte Michelangelo, shop at Corso Centocelle, see the neoclassical Trajan Theatre, and delve into the therapeutic Taurine Baths of Civitavecchia.

This city is the last stop on one of the busiest artificial waterways in the world, the Kiel Canal. It is an important base for the German Navy and famous for its international sailing event, the "Kieler Woche", an annual sailing event that attracts millions of people around the world.