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.

Paamiut lies on Greenland’s southwest coast, where the Labrador Sea meets a rocky, fjord-cut shoreline. Established in the 18th century as a Danish trading post and mission, the town developed around fishing and sealing, activities that continue to shape daily life.

Toledo, seat of Lucas County, northwestern Ohio, a port on the Maumee River, at its mouth on Lake Erie; incorporated 1837. The city's extensive transportation facilities include its fine natural harbor, which is a port on the Great Lakes-Saint Lawrence Seaway and ranks among the world's leading soft-coal-shipping ports; an extensive network of railroads; and an air cargo terminal.

Humacao is a coastal city on the southeastern side of Puerto Rico, facing the Caribbean Sea and surrounded by low hills, wetlands, beaches, and agricultural land. The city sits near the mouth of the Río Humacao, with its urban center inland from the coast and several communities extending toward the shoreline.

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.