Japanese castles are fortified structures built primarily during the feudal period, serving as residences for the ruling samurai class. They often feature distinctive architectural styles, including wooden frames and stone bases, and are surrounded by moats and walls for defense. Notable examples include Himeji Castle and Matsumoto Castle, which showcase the elegance and strategic design of these historical buildings. Many Japanese castles were constructed in the 16th century and later, reflecting the power and influence of local lords, or daimyōs. Today, these castles are important cultural heritage sites, attracting tourists and historians interested in Japan's rich history and architectural achievements.