RWTH Aachen University:
The Rheinisch-Westfälische technische Hochschule got 45.000 students (2018/2019) and is the biggest technical university in Germany. From these 45.000 students are 8000 out of a foreign country. The RWTH got 9 faculties, 260 institutes and 7 special research areas. But you can also study there humanities, social sciences, economics, medicine and dentistry. For more information you can visit the homepage (www.rwth-aachen.de) or you can just convince yourself at an open day.