Algiers is the capital and largest city of Algeria, occupying a series of hills along the western side of a broad Mediterranean bay. Its landscape combines a historic hillside core, modern districts, busy avenues, and a large waterfront. The white facades of the city rise above the sea, giving Algiers its familiar nickname, “Algiers the White.”

One of the major rivers of the Iberian Peninsula, the Douro in north-central Spain and Portugal just might be the world's most beautiful wine region. Most of the river on the Spanish side isn't navigable, so river cruises generally travel roundtrip from Porto, on the coast of the Atlantic.

The Main River winds through the heart of Germany, offering a scenic journey through picturesque towns, rolling vineyards, and historic cities.

Castellina in Chianti is a hilltop town in Tuscany, set among the vineyards and wooded slopes of the Chianti Classico area between Florence and Siena. Its historic center follows the ridge of a fortified settlement, with stone buildings, narrow streets, and views across the surrounding countryside. The town’s most distinctive structure is the Via delle Volte, a covered passage built into the medieval defensive walls.

>Slovenia, tucked between the Alps and the Adriatic Sea, is a small country with a strong sense of identity and an impressive variety of landscapes. Its capital, Ljubljana, is known for its walkable center and mix of Baroque, Secessionist, and modern architecture. The Ljubljanica River runs through the city and is lined with open-air cafés and artisan shops.