The dazzling capital of the Czech Republic, the explorable Prague has fittingly been nicknamed "the City of a Hundred Spires." Halved by the Vltava River and notable for architecture Baroque, Renaissance, and Gothic, visitors will find much to take in here.

Central African Republic, republic in central Africa, bordered on the north by Chad, on the east by Sudan, on the south by Zaire and the Republic of the Congo, and on the west by Cameroon. The landlocked nation has an area of 622,436 sq. km (about 240,323 sq. mi). Bangui is the capital and largest city.

The capital of Crete, Heraklion is a Greek port city and a popular stop on Mediterranean and Greek cruises. The city is an historical marvel, replete with archaeological wonders and remnants of the region's past. Highlights include the Heraklion Archaeological Museum, the Rocca a Mare Fortress, the Venetian Loggia, and just past the city limits, the Palace of Knossos.

Hong Kong, a Special Administrative Region of China, is a destination where skyscrapers meet the sea and mountains. Its dramatic skyline, best admired from Victoria Harbour or the Peak, reflects its role as a global financial hub.

Windhoek, the capital city of Namibia, is a vibrant and cosmopolitan hub nestled in the heart of the country. With its mix of German colonial architecture and modern African charm, Windhoek offers visitors a unique blend of history and contemporary culture. The city’s skyline is dominated by the striking Christuskirche, a Lutheran church built in 1907, which stands as a symbol of Namibia's German colonial past.