Książ Castle, located near Wałbrzych, is one of the largest castles in Poland and a significant historical landmark. Visitors can explore its opulent interiors, extensive gardens, and underground tunnels (subject to availability). Accessibility varies, with some areas being wheelchair accessible but others having stairs. Both solo and guided visits are popular, with guided tours providing deeper historical context. Seasonal restrictions may apply to garden access, particularly in winter. The approximate cost for entry ranges from 30-50 PLN, and a typical visit lasts 2-4 hours, allowing time to appreciate the castle's architecture and surroundings. Consider checking the official website for updated information on opening hours, tour schedules, and any special events.