Several independent research institutes, such as the German Cancer Research Center and two of the Max-Planck-Institutes have settled there. The New Campus is also the seat of several biomedical spin-off companies. The old part of town can be reached by tram and bus in about 10 minutes. The Neuenheimer Feld campus has extensive parking lots for faculty and student vehicles for long term and short term parking, as well as visitors and patients of the various university hospitals. The Faculty of Physics and Astronomy is not located on either campus, but on the Philosophers' Walk, separated from the Old Town by the River Neckar, and some away from the New Campus. It also maintains observatory facilities on the Königstuhl Mountain.