Opatija, located on Croatia’s Kvarner Bay, has been drawing visitors since the 19th century, when Austro-Hungarian aristocrats built grand villas along its Adriatic shoreline. Today, many of those same buildings still stand with some restored as luxury hotels and others preserved as cultural landmarks. The town’s most recognizable structure, Villa Angiolina, opened in 1844 and marked the start of Opatija’s rise as a fashionable seaside resort.

This city in the Rhine Gorge is known for its winemaking, dramatic landscapes and 15-minute cable car ride to the Niederwald Monument (celebrating the German victory over France in 1871).

Arequipa, known as the "White City," is built from sillar, a pale volcanic stone that glows in the sunlight. This architectural detail gives the historic center its striking appearance and has earned it recognition as a UNESCO World Heritage Site. Towering above the city is the perfectly symmetrical Misti Volcano, which, along with two neighboring peaks, forms a dramatic backdrop.

Evidence of our nation's birth abounds in Boston, a hub of revolution that is essentially the oldest city in the United States. Visitors are compelled to walk the 2.5-mile Freedom Trail around the city center, and bear witness to 16 historical locations related to the history of America.

San Francisco offers something for everyone. Whether it's exploring world-famous landmarks, discovering hidden gems in its neighborhoods, or enjoying the coastal breeze by the bay, this vibrant city promises a memorable experience for all who visit.