If you come by by car, it will be best to leave the motorway at the exit 'Bern Neufeld' or 'Bern Forsthaus'. The routes from the motorway exits to the institute are accurately described below. Be sure to have a parking disk with you. You will need it in order to park in the so called 'Blue Zones'. However, at most times parking in blue zones is limited to one and a half hours. Longer lasting parking permits (4 hours / 24 hours) for the blue zone are available from ticket machines at many bus stops for CHF 8.-/CHF 15.- . Using a public multi-story car park (in German) is possible though quite expensive.
Exit 'Bern Neufeld': Drive in direction 'Zentrum' on 'Neubrückstrasse' until you reach a roundabout. Take the first exit off this roundabout into 'Mittelstrasse'. After three blocks turn left into 'Gesellschaftsstrasse'. The building straight ahead is the 'Exakte Wissenschaften'. Please note: There is a multi-story car park right at the exit 'Bern Neufeld': Park + Ride Neufeld (in German).
Exit 'Bern Forsthaus': Drive in direction 'Tierspital' on 'Bremgartenstrasse' until you reach a roundabout. Take the third exit off this roundabout into 'Länggassstrasse'. After about 800 meters (You just passed the building 'Uni Tobler' on your right) turn left on a traffic light into 'Mittelstrasse'. After one block turn right into 'Gesellschaftsstrasse'. The building straight ahead is the 'Exakte Wissenschaften'.
To get more information about the location have a look at the Maps section.