In the very vivid tour by Fiaker of the Vienna Ringstraße, we find ourselves passing the Hofburg to our right, and then "davorne" we're told is the Staatsoper, followed by Parlament and the Burgtheater.
I know I'm splitting hairs, but when travelling clockwise around the Ringstraße, you've already left the Staatsoper behind by the time you're admiring the Hofburg on your right.
Two other things:
In Europe, with all its centuries of history, it's a bit ironic to talk about each building on the Ringstraße as having “so viel Geschichte." Deliberately chosen to emulate the architectural styles of bygone eras, they were all built around the same time in the late 19th century, and they're not actually drenched in the history that their styles would suggest.
And your clue card for “Viennese horse carriage” leads to the answer “eine Fiakerfahrt," which actually means “tour in a Viennese horse carriage." The actual answer to that clue should have simply been “der Fiaker”
Still, I really enjoyed the tour. It brought back many wonderful memories.!