Location: Wiesbaden Netobergbahn
Google Maps: https://www.google.com/maps?q=Parking+lot,+65193+Wiesbaden&ftid=0x47bdbe6322d783d7:0x66cf5605fe8a33b4&hl=en-US&gl=us&entry=gps&lucs=a1&shorturl=1
How to get there?
Car: use technology, park in the parkplatz
Take the number 1 bus from Wiesbaden Hauptbahnhof and you'll magically arrive at the on-start.
Take A66 direction Wiesbaden exit Wiesbaden-Erbenheim or Mainzer Strasse towards City centre, Kurhaus/Theater on Wilhelmstrasse and turn left at the end of the street into Taunusstrasse. Take the next right, drive up Geisberg and follow the main road to Neroberg/Opelbad.
take the train to Wiesbaden main station, then bus line 1 (bus platform B) towards Nerotal. Exit at the end station Nerotal and walk up the hill to the on on.