Karlsplatz
The bus parking area has space for ten coaches and car parking is available in the adjacent underground parking garage.

Freiburg Karlsbau - © Copyright FWTM-Barth
The Karlsplatz is ideally located between the Municipal Park and Freiburg’s historic Old Town, making it the perfect starting point for your tour of the city. From here, you can walk to the Gothic cathedral, the Schlossberg Railway, the iconic Erpeldenkmal duck statue in the Municipal Park and many other places of interest.
http://www.freiburg.de/pb/,Lde/231355.html
freely accessible / always open