The term "Ishikawa" can refer to various subjects, including a Japanese surname, a region in Japan, or specific methodologies in quality management. One notable aspect is the Ishikawa diagram, also known as a fishbone diagram, which is a tool used to identify the root causes of problems in processes. Ishikawa Prefecture, located on the main island of Honshu, is known for its rich cultural heritage, beautiful landscapes, and traditional crafts. The region is famous for its historical sites, such as the Kanazawa Castle and the Kenrokuen Garden, which attract many visitors each year.