China is the world's third largest country by area and has the largest population. China includes more than 3400 offshore islands. Beijing, Shanghai, and Guangzhou are major cultural centers, which contain most of the renowned museums, theaters, and cultural displays.

ABERDEEN -- Scotland's third-largest city (pop. 187,000) is characterized by buildings of beautiful white granite. Set beside the North Sea, Aberdeen is both a university town and the capital of the Scottish oil boom. It is also one of Scotland's largest seaside resorts (though its appeal is confined to those who like their water well-chilled).

Ol Doinyo Lengai, often called the "Mountain of God," is an active volcano located in northern Tanzania and is a must-visit for adventurous travelers. Towering over the Great Rift Valley, this majestic peak is unique due to its lava composition. Unlike most volcanoes that produce molten lava, Ol Doinyo Lengai emits natrocarbonatite lava, which is unusually cool and flows like water. This rare phenomenon makes it one of the most intriguing volcanic landscapes on Earth.

This historic port town is located on the Gulf of Nicoya in Costa Rica. Don't miss the seafood cafes along Paseo de los Turistas promenade.

Situated between Mexico and Colombia, Central America is comprised of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama.