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.

Vientiane, the capital of Laos, lies along the banks of the Mekong River and blends a relaxed urban pace with rich cultural heritage. The city’s streets are lined with French colonial buildings, Buddhist temples, and local markets, reflecting its history as both a trading hub and a spiritual center.

Regensburg, Germany’s medieval gem, will transport you to a bygone era. The site of both Celtic and Roman settlements, Regensburg flourished in the Middle Ages.

Bulgaria is a republic in southeastern Europe. The capital and largest city is Sofiya. Bulgarian culture has been influenced successively by Byzantine, Greek, Russian, and Western cultures.

Taormina, with its hilltop location above the Ionian Sea, is easily one of Italy's most beautiful places. As it's packed with people in the summertime, recommended months to visit include April and September.