With more than 100,000 habitants, Trier is the biggest city in the west Rhineland-Palatinate. Furthermore, the city is adjacent to Belgium, Luxembourg and France.
The Greek city of Marathon established a sister-city relationship with Xiamen in East China's Fujian province on January 2, 2009.
The US city of Sarasota established the sister-city relationship with Xiamen's Siming district on October 9, 2007.
Mokpo is the sixth-largest city in South Korea and capital of Jeolla Nam-do province located in the country's southwest. It is the third-largest port and logistics hub in Northeast Asia.
Surabaya is Indonesia's second-largest city and is the capital city of East Java province. It is located on the northeastern shore of Java Island, adjacent to the Surabaya Strait.
Zoetermeer is a newly-developed city situated in the center of the country. It is near the Hague and Rotterdam, and is only 45 kilometers away from Amsterdam airport.
Guadalajara was founded in 1531 and is the capital of Jalisco State and the second largest city in Mexico with a population of 1.49 million. It is situated at the left bank of the Grand River at an altitude of 1,567 meters.
