After climbing the island's watchtower, I inspected the baluarte, which did not impress me at all. I guess because it looked so fake, so trying hard to look like a ruin when it was anything but.
Inside were trees that are skinny it's obvious they have been there for only maybe a decade or less, further ruining the "ruin" bit.
I do have a liked photo taken from the baluarte.
It's a photo of my friend on the watchtower, the perspective of which was taken when I looked up from inside the baluarte.