Coming from Cologne (Köln): Take A555 to Bonn and A565 Bonn -- Beuel Nord, then take A59 towards Königswinter and continue on B42.
Coming from Ruhr Area / Leverkusen: Take A3, then A59 and continue on B42 to Königswinter.
Coming from Frankfurt: Follow A3 until exit Siebengebirge/Ittenbach, then follow street to Königswinter.
Coming from Koblenz: Take B42, following River Rhine until Königswinter, or take B9 / Bonn and the Rhine Ferry to Königswinter.
Parking area near the valley station.
Route Cologne (Köln) - Koblenz: RE8 or RB27 - Stop at Königswinter - 30-minute intervals
By city railway, line 66
Bad Honnef -- Königswinter -- Bonn Central Station -- Siegburg - Train stops in all the places until terminal stop in Bad Honnef.
Cologne Airport (Köln/Bonn) - Distance ca. 20 minutes by car, by bus via Köln/Bonn, airport line SB 60 to Bonn Central Station, then city railway, line 66.