[Credit & Copyright: Stefan Seip (TWAN)]
Awesome! I’m a lurker on APOD, but I ever miss them.
As luck would have it, Google 3d buildings includes the castle, and everything lines up nicely from the POV of a ridge in the foreground of the Google Earth screen shot below, which includes a line of sight with bearing indicated. So, if this isn't the spot, it ought to be!
I added the zoom-in along the same line of sight which corresponds very well with the APOD. If you are inclined to nitpick, just try it!
The comet could be seen over Disney World? Who Knew?
(joke...just in case anyone thinks I didn’t read the article...hahaha)