Wales is sometimes called the castle capital of the world because of the large number of castles in a relatively small area. Wales had about 600 castles, of which over 100 are still standing, either as ruins or as restored buildings.

Wales is widely recognized as the "Castle Capital of the World." This title is earned because Wales has more castles per square mile than any other country on Earth. There are approximately 600 castles scattered across its landscape, ranging from the well-preserved "Iron Ring" fortresses built by King Edward I (such as Conwy, Caernarfon, and Harlech) to romantic ruins like Carreg Cennen and the massive Caerphilly Castle with its famous leaning tower. This high density is a result of the country's turbulent medieval history and the centuries of conflict between Welsh princes and English kings. While Germany and France are famous for their sprawling chateaus and fairy-tale palaces (like Neuschwanstein), the sheer concentration of defensive medieval structures in Wales is unmatched globally. For travelers, this means you are rarely more than a few miles away from a historical site, making it the ultimate destination for enthusiasts of medieval architecture and military history.