This cultural capital and university city holds more than 2,000 years of history and is the cultural hub of Germany. Marvel at the gorgeous twin-spired Cologne Cathedral, known for its gilded medieval reliquary and sweeping river views, or lose yourself in one of Colonge's many museums for a few hours. Cologne boasts of having most pubs per person in Germany, so make sure you sit down for a refreshing regional Kölsch beer during your travels!

Aberdare National Park is a 311 square mile sanctuary on an isolated volcanic massif which forms part of the eastern wall of the Rift Valley. Part of the larger forest reserve, the Aberdares are covered with a dense rainforest and provide spectacular views over the Rift Valley. Bird life is abundant with more than 200 species.

Also known as Canton, it is located adjacent to Hong Kong, an important industrial and trade center in South China.

Even though Linköping has developed into an industrial center and is Sweden's fifth-largest city, it maintains a small-town atmosphere. Old Linköping is the restored town center with preserved buildings from the 18th and 19th centuries. The tower of the impressive Linköping Cathedral, which took nearly 300 years to complete, can be seen from a distance of more than 10 kilometers.

Sucre, Bolivia’s constitutional capital, is a city steeped in history and colonial charm. Founded in the 16th century by the Spanish, it played a pivotal role in South America’s independence movements, earning its place as the birthplace of the Bolivian Republic.