The best travel options by train are:
Darmstadt Hbf (08:12) -> GSI Bonn (11:56)
https://www.bahn.de/buchung/start?vbid=bc64c619-3049-4363-9e14-de0a83c71541
Frankfurt/Main Hbf (08:15) -> GSI Bonn (10:56)
https://www.bahn.de/buchung/start?vbid=00c0fb61-51c8-49c4-8b0a-b29c8292ae96
Bielefeld Hbf (08:40) -> GSI Bonn (11:56)
https://www.bahn.de/buchung/start?vbid=ee4e294d-e3b4-4a86-872a-a670248067c6
From main station Bonn to GSI:
by subway line 16 or 63 direction Bad-Godesberg, stop "Max-Löbner-Straße"
For arrival by car and further details see:
There are GSI parking lots for 13 €/24 hours.
