Historic Wales is known for its rich heritage, featuring numerous castles, ancient ruins, and archaeological sites. Notable structures include the impressive Caernarfon Castle and Conwy Castle, both UNESCO World Heritage Sites, showcasing the architectural prowess of the Medieval period. The region's history is also marked by its Celtic roots, with remnants of Roman settlements and Iron Age hill forts scattered throughout the landscape. Additionally, the Welsh language and traditions reflect the cultural identity that has evolved over centuries, making Wales a unique part of the United Kingdom's history.