Germany has significantly more castles than Ireland, though the definition of "castle" can lead to different estimates. Germany is estimated to have over 25,000 castles, palaces, and ruins, ranging from the world-famous Neuschwanstein (the "Disney castle") to the medieval fortresses along the Rhine River. Ireland, by contrast, is estimated to have roughly 30,000 castle sites, but the majority of these are ruins, "tower houses," or mere remnants of foundations. When counting standing, identifiable castle structures, Germany holds the lead due to its larger landmass and its historical period of decentralized, warring principalities, each of which built its own fortified seat of power. In Germany, you also encounter the distinction between a Burg (a defensive fortress) and a Schloss (a grand residential palace). While Ireland’s density of castles per square mile is arguably higher, the total number of surviving, habitable, or visually intact castles is overwhelmingly in Germany's favor, making it the premier destination for castle enthusiasts in 2026.