Architecturally, Pembroke Castle is outstanding. It has a huge cylindrical tower with a stone dome, measuring nearly 80 ft high. What’s more, unusually all the rooms inside are circular. And if that wasn’t unique enough Pembroke Castle also has a complex barbican with three portcullises and is the only castle in Britain to incorporate a natural cavern, a large cave known as “The Wogan”, which has shown occupation for 12,000 years. However, Pembroke Castle’s biggest claim to fame is as the birthplace of the Welsh King of England, King Henry VII. Known as Harri Tudur to the Welsh, King Henry VII was a proud Welshman to the core. He continued to enjoy Welsh music, poetry and sport and even continued to fly the Welsh flag as King. With thousands of years of history under its belt and being the birthplace of a King, Pembroke Castle also has the distinction of never falling in battle to the Welsh.