The lectures of IWASAWA 2012 will take place in the auditorium HS 1, in the building of the Mathematical Institute Heidelberg, Im Neuenheimer Feld 288, 69120 Heidelberg.
The preparatory course will take place in the same building, in HS 2.
How to get there and some useful links:
Directions and other useful information
Public transport: VRN
Deutsche Bahn: DB
Route to Mathematical Institute Heidelberg by Google Maps