It is important to explain a bit about the phrase “knockin’ about” so you understand what we do when we’re traveling. First, I’ll give you a definition found online on the Cambridge dictionary.

Knocking about: to be in a place which is not exactly known or in various places especially over a long period of time

Or better yet, here is another one from the Free Online dictionary site:

knock about, around vb

1. (intr, adverb) to wander about aimlessly
2. (intr, preposition) to travel about, esp as resulting in varied or exotic experience
      ie: he’s knocked about the world a bit
This is the gist of what we do when traveling around the United States and I doubt it will be much different when we tour Europe next month.
It is not always aimless because we usually have some semblance of an itinerary that we try to follow but sometimes we get off track and just knock about.
The beaten track that is. A road not always taken by others.
Till next time,