Located in the heart of the Ruhrgebiet, Essen belongs to the largest metropolitain area of Europe with more than 4.5 million people. This is the place where I work and where the University of Duisburg-Essen is located.
Next year, Essen will be the cultural capital of Europe, hoping to attract people from all over the world. You can find the program here. At university various projects are going on to this event.
Due to its importance for the arms industry (Krupp) in World War II Essen was almost entirely destroyed by the Allies by the end of the war. Thus, most of the infrastructure and buildings were constructed in the industrial era in the late 40s and early 50s. Since the whole area is rich on black coal, many mining site can still be visited today.
Here is a selection of sites to be visited in and around Essen: