European castles are large fortified structures built primarily during the Middle Ages. They served as residences for nobility and were designed for defense against invaders. Many castles feature thick stone walls, towers, and moats, reflecting the architectural styles of their time, such as Gothic or Romanesque. Today, many of these castles, like Neuschwanstein Castle in Germany and Edinburgh Castle in Scotland, are popular tourist attractions. They often showcase historical artifacts and provide insights into the lives of the people who lived there. Castles also play a significant role in the cultural heritage of their respective countries.