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.

Sardinia, an island gem in the Mediterranean Sea, beckons travelers with its stunning landscapes and rich cultural heritage. Known for its dramatic coastline and crystal-clear waters, Sardinia boasts some of the most beautiful beaches in Italy. The Costa Smeralda, with its turquoise waters and white sandy beaches, is a highlight, attracting sun-seekers and luxury travelers alike.

Sandwich, Massachusetts, occupies the Upper Cape near the eastern end of the Cape Cod Canal and is recognized as the oldest town on Cape Cod. Its historic center combines colonial-era homes, a village common, small shops, galleries, and landmarks around Shawme Pond. The town extends from inland woodlands and freshwater ponds to salt marshes and Cape Cod Bay, giving it a varied coastal landscape.

Shopping, historic temples, lush green spaces and exceptional dining are all part of Tokyo, the capital of Japan. This spectacular, highly populated metropolis holds unlimited options for tourists.

This is a city one could get lost in for days, exploring the old Ming Dynasty walls and wandering through its superb museum. If time permits, you should also take a walk through Linggu Park, home of the Linggu Pagoda and other items of Buddhist interest. Even just a casual walk through the streets-replete with food vendors and baskets of live geese-will help convey the unique flavor of this city.