While Germany may have the most amount of castles, Wales is the country with the most castles per square mile. Despite its small size, Wales had over 600 castles. Today over 400 castles still stand and are waiting to be explored by visitors. This is the largest castle in Wales and the second largest in Britain.

France is widely recognized as the country with the most castles in the world, with current 2026 estimates placing the number at approximately 45,000. These structures range from massive fortified medieval strongholds to elegant Renaissance châteaus. Italy follows in second place with about 20,000 castles, reflecting its long history of fragmented city-states and defensive needs. Germany is often associated most strongly with "fairy-tale" castles and holds the third spot with over 3,400 documented ruins and preserved castles (though some broader definitions of "fortified sites" suggest even higher numbers). The density of castles in France is attributed to its strategic location in Western Europe and the historical prevalence of the feudal system, which required local lords to build defensive residences. While many countries like Wales or Ireland have a higher density of castles per square mile, France’s sheer landmass and preserved history keep it at the top of the global list.