Even during the communist era, the eastern German city of Leipzig was an important center for industry and trade fairs. And it was here that the Monday Demonstrations began, which helped lead to the fall of the Berlin Wall.Today Leipzig welcomes goods from around the world. It’s home to Europe's most state-of-the-art air freight hub, operated by logistics firm DHL. But the city also boasts a vibrant arts scene. Our reporter Dagmar Zindel visited a group of artists who work there in an former cotton mill.