Thank you for your post, @
JustinAlexander however:
Each hex represents such a small area because the geography is dense jungle. This means that travel is very slow. I'd prefer the PCs not spend the most of a day traveling from one hex to the other.
The area is dense jungle, hence visibility is significantly reduced. A tower might poke above the treeline, but lower than that and it would not be visible. Besides, what may be in the hex may not be
obvious. Something as simple as special plants would not be clear unless it was thoroughly searched, or a small shrine to a local spirit, or a sacred tree, and so on.
In addition, in the large area around the starting location there are no such large structures, as it is taboo to build anything out of stone, let alone anything overly large, because of the local's interpretation of the continent's history.
Finally, In My Campaign, almost every hex will have something of note; the vast, vast majority
will have something in it.