By Public Transportation

You can take the S1 train from München Hauptbahnhof until the (last) Freising stop. See the timetable for more details: https://www.s-bahn-muenchen.de/en/travel/timetables

By Car:

Address: iGZW (internationales Getränkewissenschaftliches Zentrum Weihenstephan), Technical University Munich, Gregor-Mendel-Str. 4, 85354 Freising