Abandoned castles are historical structures that have been left uninhabited and neglected over time. Often built for defense or as residences for nobility, these castles can be found in various countries, showcasing unique architectural styles and rich histories. Many were abandoned due to changes in political power, economic decline, or natural disasters. Today, abandoned castles attract tourists and historians alike, offering a glimpse into the past. They often feature crumbling walls, overgrown gardens, and remnants of their former grandeur. Some famous examples include Neuschwanstein Castle in Germany and Castle of the Moors in Portugal.