Thingvellir, a captivating site in Iceland, seamlessly combines natural beauty and historical significance. Located in the Thingvellir National Park, this UNESCO World Heritage Site is a geological wonder where the North American and Eurasian tectonic plates meet. The dramatic landscape features rift valleys and stunning volcanic formations, making it a paradise for hikers and nature enthusiasts.

Warnemunde (or Warnemünde) is a port city in Germany and a frequent stop on many Northern European cruises. Across the Baltic Sea from Denmark's capital, Copenhagen, this charming seaside city has a number of delightful attractions, including the Warnemünde Lighthouse, a variety of local shops along the marina, and surfing lessons on the beach.

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.

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.

Haines is a charming stop in the Alaska Panhandle and a gateway to Glacier Bay National Park and Tongass National Forest.