Leiden or Leyden, city in the western Netherlands, in Zuid-Holland (South Holland) Province, on the Old Rhine River, near The Hague. Leiden is also the site of the State University of Leiden, one of the oldest and most distinguished universities in Europe. It was the birthplace of several important Dutch painters, including Rembrandt, Jan van Goyen, and Jan Steen. During the 17th century the English settlers who became known as the Pilgrims took refuge in Leiden before leaving for North America.

The Seychelles, an archipelago of 115 islands in the Indian Ocean, is renowned for its turquoise waters, white-sand beaches, and lush tropical landscapes.

Shrewsbury, a picturesque market town in Shropshire, England, is celebrated for its medieval charm, riverside setting, and remarkably well-preserved architecture. Encircled almost entirely by a loop of the River Severn, the town’s winding streets and timber-framed buildings transport visitors back through centuries of English history.

Sweden is a country where medieval towns, coastal archipelagos, and expansive forests sit side by side with modern design and a strong cultural identity. Stockholm, the capital, is built across 14 islands connected by bridges and ferries. The historic district of Gamla Stan features narrow, cobbled streets and colorful buildings dating back to the 13th century.

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.