By car: Autobahn A5 from the north until Autobahnkreuz Heidelberg, turn to A656 direction Heidelberg; at the end of the Autobahn turn right and at the main station turn right again, stay on the four-lane road (underbridge), at the traffic light half left, then straight ahead, take third exit in the roundabout ('left'), at the next traffic light turn right into Steigerweg, and follow the direction signs „Max-Planck-Institut für Kernphysik“ about 2.5 km uphill.
From the south leave A5 at the exit Heidelberg/Schwetzingen, turn to B535 direction Heidelberg/Leimen, then right direction Leimen and keep straight ahead for about 4.5 km (at last uphill) to the Aral station, there turn left to Boxberg and follow the direction signs „Max-Planck-Institut für Kernphysik“.
By train: Arriving at the main station Heidelberg Hauptbahnhof which can be reached either directly by long-distance trains or via Mannheim and S-Bahn, take a taxi to the institute, or bus 39 direction Königstuhl until the stop „MPI Kernphysik“ or bus 39A until the stop „Bierhelderhof/Ehrenfriedhof“ (about 15 min). Alternatively with S1, S2, S5 to Heidelberg Weststadt/Südstadt, then walk (3 min) to Alois-Link-Platz and take bus 39 or 39A.
By plane: Airport Frankfurt/Main; take either an express train (ICE, IC) at Flughafen Fernbahnhof via Mannheim or the Lufthansa Airport Bus to Heidelberg. Continue with a taxi.
By taxi: Taxis are available outside the main station or can be called: +49 6221 302030. Please tell the taxi driver MPI für Kernphysik, Saupfercheckweg, as there are three other MPIs in Heidelberg.