By car

From Cologne via the A555 or A59:

Take the A565 in the direction Koblenz. Follow the A565 to the exit Bonn-Endenich and keep right. Turn right onto the Hermann-Wandersleb-Ring and then right again into Auf dem Hügel. Finally turn left into the street Am Bleichgraben and try to find a free parking spot.

From Koblenz via the A61:

Take the A565 in the direction Bonn. Take the exit Bonn Lengsdorf and turn left into the street Provinzial-Straße (it is not possible to take the exit Bonn-Endenich coming from the south). Follow it for a while (the name changes to Hermann-Wandersleb-Ring after an intersection, keep right). Turn left into the street Auf dem Hügel and finally turn left again into the street Am Bleichgraben. Look for a free parking spot. 

By air, train and bus

From Frankfurt Airport to Bonn main train station (Bonn HBf):

Travellers arriving at Frankfurt Airport go to the airport train station "Fernbahnhof". There are two different possibilities to travel to Bonn:

Take a train to Bonn main train station.
Take an ICE-train to Siegburg/Bonn and then the tram 66 to Bonn main train station.
Please take note that both possibilities require different tickets (The ICE is slightly more expensive, but faster). The website of the Deutsche Bahn provides futher information and time tables

From Cologne/Bonn Airport to Bonn main train station (Bonn HBf):

From Cologne/Bonn Airport there are two possibilities to travel to Bonn main train station:

Take the airport bus SB60 to Bonn main train station.
Take the RegionalExpress to Koblenz and leave the train at Bonn-Beuel train station. There take tram 62 to Bonn main train station. The Regionalexpress operates from 5:50 am to 7:50 pm at hourly intervals

From Bonn main train station (Bonn HBf) to the institute:

At Bonn main train station go to the main bus terminal and take the bus line 610 (important: direction Duisdorf Bahnhof, terminal »D«) or  bus line 611 (important: direction Lessenich Sportplatz, terminal »D«) to the bus stop Immenburgpark. The Verkehrsverbund Rhein-Sieg (VRS) provides online timetables. The travel time to the bus stop Immenburgpark is about 10–20 minutes. From the bus stop it is a 2-minute walk to the institute.

You may also take a taxi from the main train station to the institute.

Our address is:
Argelander-Institut für Astronomie
Auf dem Hügel 71
D-53121 Bonn

The trip takes 10 to 15 minutes and costs approximately 10 euro.