Pembroke Castle is the only castle in Britain to be built over a natural cavern, a large cave known as the Wogan.
Pembroke Castle is the birthplace of Henry Tudor, the future King Henry VII.
Pembroke was also known as, or recorded in historical documents as:
PENFRO and as PENBROCH
Pembroke Castle has been described as a certain Timber Castle.
It has also been described as a Masonry Castle.
Pembroke Castle was established by the marauding Normans in about 1094.
In 1189 the castle came into the hands of William Marshal.
Over the next thirty years, William Marshal had the earth-and-timber castle transformed into a mighty stone fortification.