Peso da Régua, often called the gateway to Portugal's Douro Valley, sits along the banks of the Douro River and is surrounded by steep, terraced vineyards. The town has long been central to the production of the world-famous Port wine, and visitors can explore the rolling hills covered with neatly arranged grapevines that climb dramatically from the river’s edge. The town itself offers a quiet riverside charm, with narrow streets, historic buildings, and scenic viewpoints.

Potsdam, the capital of Germany’s Brandenburg state, lies just southwest of Berlin and is best known for its grand palaces, landscaped gardens, and role as a seat of Prussian royalty.

New Orleans is unlike any other city in the United States. Founded in 1718, it carries layers of French, Spanish, African, and Caribbean influence that can be felt in everything from its architecture to its street music. The French Quarter, the oldest neighborhood in the city, is full of iron-laced balconies, gas lamps, and narrow streets that echo with the sounds of live jazz.

Stonehenge, one of the world's most iconic prehistoric monuments, stands proudly on the Salisbury Plain in Wiltshire, England. This enigmatic stone circle, believed to have been constructed between 3000 BC and 2000 BC, has captivated archaeologists, historians, and travelers alike for centuries.

A hundred and forty seven miles from Frankfurt, Bayreuth is an important town the the history of classical music. There's a museum in this town dedicated to the composer who made Bayreuth famous, Richard Wagner. Every year, from the end of July and throughout August, the Bayreuth Festival pays homage to Wagner by presenting various operas he created.

Zamora is a compact city in northwestern Spain, set along the Duero River and known for its remarkable concentration of Romanesque architecture.