Ilok, the easternmost town in Croatia on the Danube River, may be small but it has a lot to offer. A well-preserved Franciscan monastery and a 15th century castle make it a popular day trip for domestic as well as foreign tourists. Its wine-making tradition is even older; some say the region's viniculture dates back as early as 280 AD.

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.

Mongolia's capital and largest city Ulaanbaater, includes many points of interest: Mongolia's State Archives and State Public Library, which contains about 3 million volumes; the State Central Museum, which contains art treasures and antiquities; the Fine Arts Museum, with a collection of painting and sculpture; two museums with items from the revolutionary movement; and the Museum of Religion, with a collection of Lamaist relics.

Charlottetown, the charming capital of Prince Edward Island, is where history and modernity blend seamlessly. Often called the "Birthplace of Confederation," this picturesque city holds a special place in Canadian history as the site of the 1864 Charlottetown Conference, which paved the way for the creation of Canada.

Welcome to Nairobi, safari capital and the largest city in Kenya. At one time a simple hydration spot for the Maasai, this high-energy East African city now strikes a balance between the cosmopolitan and the natural. In its adjacent Nairobi National Park, visitors will see lions, zebras, giraffes and rare black rhinos.