The continent lying mainly within the Antarctic Cirle with the South Pole approximately at its center. The Antarctic Treaty of 1959, signed by 12 countries prohibits military activities and promotes the exchange of scientific information.

Gokyo is a small settlement high in Nepal’s Khumbu region, set beside a chain of turquoise glacial lakes beneath the Himalaya. Its significance is closely tied to trans-Himalayan trade routes and to Sherpa culture, which has adapted over generations to life at extreme altitude.

Plovdiv, one of the oldest continuously inhabited cities in Europe, carries over 8,000 years of history layered into its streets. The Roman Theater, still in use today, was discovered by accident in the 1970s and now hosts operas and concerts overlooking the Rhodope Mountains. Nearby, visitors can walk the remains of a Roman stadium buried beneath the main pedestrian street, where modern shops and cafés stand above ancient foundations.

Semarang is a port city on the north coast of Java, shaped by centuries of trade, migration, and cultural exchange. As an important hub during the Dutch colonial period, it developed into a city where Javanese traditions intersect with European and Chinese influences.

Seven miles outside of historic Athens, the Greek coastal city of Piraeus lies upon the sparkling waters of the Aegean Sea and is the largest passenger port in Europe, servicing nearly 20 million passengers per year.