The grand buildings of Frankfurt are amazing. The tallest building is about 250m. Ws was a very nice experience driving on the road between the buildings. Some roads are narrow and it was impressive that the drivers could drive the track. The audios are to be criticized. You put the headphones in, but couldn't hear some languages clearly. With some, you had to turn the volume up to maximum, because 1 mm less could not be heard. As a result, it was much too loud and uncomfortable in the ears. Another seat, up front, had better quality, but I got three electric shocks trying the other audio hole! Two electric shocks to the ear and one to the finger. This urgently needs to be repaired/fixed.

Great insight! I had booked the Skyline Tour because you can drive both routes and also stop at different sights. (1 hour Express and 2 hours Skyline - it says on the front of the bus which one you are doing) The audio guide works well and everyone gets their own headphones. I can only recommend Hop on/Hop off, everyone who hasn't been to Frankfurt should do it.

Well organized and very informative. We had the last ride of the day (start 5:00 p.m.) and it took longer than planned due to traffic jams (rush hour). Please plan for this if you plan to do any activities afterwards. The friendly driver was a real artist as he confidently steered the big bus through the narrow streets with their cars parked all over the place - hats off!