I grew up in this area a long time ago - not quite 40,000 years. This is my local Norman castle!
The obvious history you could see were the castles and walled towns. More recently, lots of ship building in the last 200 or so years, and plenty of WWII sites.
There are many other parts of Pembrokeshire with Stone Age sites that are well known, and there were clearly many people living in this area for a long time before even those later inhabitants
Very cool!