Exit the Autobahn (A7) at HH-Bahrenfeld. Arriving in Hamburg from the South: turn left onto the main road (Osdorfer Weg). Arriving in Hamburg from the North: turn right onto the main road (Osdorfer Weg). Then turn right onto Notkestraße. The main entrance of DESY is the second road on the left. A limited number of parking spaces are available on the DESY campus.