Tomar sits on the Nabão River in central Portugal as a place where medieval history and everyday life meet in welcoming streets and grand monuments. Just outside the convent walls lies the Pegões Aqueduct, an impressive feat of engineering more than 6 kilometers long that once carried water from distant springs to the hilltop site. Some sections of its arches rise more than 30 meters above the valley floor, making it a striking backdrop for photos.

A moving sight...literally. Hubbard Glacier's recent nickname "the galloping glacier" refers to its rapid movement through Disenchantment Bay in the direction of the Gulf of Alaska. This tidewater glacier is a natural wonder over 6 miles wide! Those on ships are usually able to get within about a half mile of Hubbard Glacier's face.

Victoria de Durango rises on a high plateau Mexico’s Sierra Madre Occidental, founded in 1563 by Francisco de Ibarra. Its streets trace layers of history: the historic center holds the most listed buildings in northern Mexico and remains a notable stop on the Camino Real de Tierra Adentro, now a UNESCO World Heritage route.

Steeped in history, Canterbury, England is a must-visit destination for lovers of medieval charm and religious significance. The centerpiece of this historic city is Canterbury Cathedral, a UNESCO World Heritage Site that has been a place of Christian worship since the 6th century. As the seat of the Archbishop of Canterbury, it is one of the most important religious buildings in England.

There's more than meets the eye in Savona, a Northwest Italy port city many cruise ship passengers are lucky enough to find themselves in. The giant Fortezza del Priamàr looms over the water, providing a unique welcome. Be sure to stroll through the city's genteel, impressive medieval center, visit the beautiful Savona Cathedral and see marvelous artistic works from centuries past at the Ceramics Museum.