1. Athens is the capital and largest city of the Greek Republic, the eighth largest city in Europe and one of the commercial centers of the European Union. Athens has a recorded history of more than 3,000 years and is known as the "cradle of western civilization". Athens is also the birthplace of European philosophy, which has a great influence on European and world culture. A large number of great historical figures such as Socrates and Plato were born, which can be called the birthplace of democracy.

2. Cairo is the capital and largest city of Egypt, as well as the largest city in Africa and the Arab world. The city straddles the Nile River and is the political, economic, cultural and transportation center of the whole Middle East, located in the northeast of Egypt. Cairo is one of the oldest cities in the world. It is one of the four cradles of human civilization and occupies a prominent position in the history of human social development.

Rome is the capital and largest city of Italy, and also the political, economic, cultural and transportation center of the country, with a history of more than 2,500 years. It is a world-famous historical and cultural city and the birthplace of the Roman Empire. Because of its long history, it is nicknamed "the eternal city". From 65438 to 0980, the historic city of Rome was listed as a world cultural heritage.

4. UNESCO 198 1 designated "World Historic City" Xi is one of the important birthplaces of Chinese civilization and the Chinese nation, and the starting point of the Silk Road. More than ten dynasties established their capitals here in history, making it one of the four ancient capitals in the world. It is also one of the oldest and most influential capitals in China.

Samarkand is one of the oldest cities in Central Asia and an important hub city on the Silk Road. It has a history of 2500 years and is the capital of the ancient Timur Empire. Samarkand connects China, the Persian Empire and the Indian Empire. In 2000, the ancient city of Samarkand was assessed as a world cultural heritage by UNESCO.