1. By German Railway to Heidelberg Main Station (Hauptbahnhof).
or
2. By Lufthansa Airport Bus. The bus stop is located at the Meeting Point in Terminal 1 arrival area, hall B, exit B4. It will take you to the Crowne Plaza Hotel (Kurfürstenanlage 1-3) in Heidelberg (price EUR 19.00). From there, you can take a taxi to the IWH.
II. From Stuttgart Airport to Heidelberg Main Station
1. By German Railway to Heidelberg Main Station (Hauptbahnhof).
III. From Heidelberg Main Station to IWH
1. Take the S-Bahn (S1, S2 - destination "Osterburken") and get off at "Karlstor". Travel time: approx. 5 minutes. It is a 3-minute walk to the IWH from there, see map.
or
IV. To IWH by car
1. Autobahn A5
Take A5 to the exit 38 ("Heidelberg Mitte"). At the end of the autobahn, get in the left lane and take local road B37 towards Eberbach/Mosbach along the Neckar river. At "Karlstor", the second traffic light after the old bridge ("Alte Brücke"), turn right into " Hauptstraße" (narrow street). The IWH is on your left. The nearest parking opportunities are "Parkhaus 13" (parking garage 13) at the "Karlsplatz" (16,30 € per day) and "Parkhaus 12" (parking garage 12) at the "Kornmarkt" (10,- € per day).A fee is charged. It is a 3-minute walk from there to the IWH.
2. Autobahn A6
Take autobahn A6 to the "Sinsheim" exit. Turn onto local road B37 towards Neckargemünd and drive to Heidelberg along the Neckar River. At "Karlstor", turn left into "Hauptstraße". Follow the directions under IV. 1 from there.