Chengdu Chengdu, the capital of Sichuan Province, covers an area of 14,600 km square and has a resident population of more than 16 million people. Founded over 2300 years ago, Chengdu is home to several world natural and cultural heritages.
Ludwigsburg Ludwigsburg is a medium-sized town (93,000 inhabitants) in the north of Stuttgart, famous for its baroque palaces. The municipality’s activities are based on the integrated city development concept with strategic objectives in 11 areas.
Mantova Mantova is a city in Northern Italy with 50 000 inhabitants. The city is the main city of the province of Mantova, one of Lombardy’s most extended provinces.
Medellin With its 2 500 000 inhabitants, Medellin is the second largest city in Colombia. 
QuyNhon Quy Nhon is a coastal city in the Binh Dinh Province in Vietnam. It covers an area of 284 square km and has a population of 660 000 inhabitants.