Situated on the coast of Tuscany near the Tyrrhenian Sea, Livorno, Italy, is a popular stop on Mediterranean cruises and an important commercial and industrial port. It was founded on a former auxiliary Pisan port between the late 16th and early 17th centuries on the orders of the Grand Duke Cosimo I, who made it Tuscany's main outlet to the sea.

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.

Charming Copenhagen is the jewel of Denmark and a delightful stop for any traveler. Well-known as an eco-friendly haven for sustainable and green living, Copenhagen has embraced its status as the best “bike city” on earth and promoted the use of bicycles by locals and tourists.

Amboise has 12,000 inhabitants and is in the heart of Touraine, in the land of chateaux. It is a town both traditional and modern, lively and quiet. In Amboise, there is a royal castle set above the Loire Valley and is a strong point extensively embellished during the 15th and 16th centuries.

Set at the meeting point of Brazil and Argentina, Foz do Iguaçu is defined by the sheer scale of the Iguaçu Falls. Nearly 275 individual waterfalls stretch across close to three kilometers, sending mist into the air and sound echoing through the surrounding forest. Visitors follow raised walkways that bring them face to face with this moving wall of water, culminating at the dramatic Devil’s Throat, a deep, curved drop where the river seems to vanish into the earth.