The Hausdorff Research Institute for Mathematics (HIM) [2] is part of the Hausdorff Center for Mathematics [3].
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/38
[2] http://www.hausdorff-research-institute.uni-bonn.de/
[3] http://www.hausdorff-center.uni-bonn.de