While Kiyomasa is generally known as a great commander having both wisdom and courage, he is also known as a master of castle construction to rank with Takatora TODO, and was engaged in the construction of many castles including Kumamoto-jo Castle, Nagoya-jo Castle (Hizen Province), Ulsan Japanese Castle, Edo-jo Castle and Nagoya-jo Castle (Owari Province).
清正は一般に智勇兼備の名将として知られているが、同時に藤堂高虎と並ぶ築城の名手としても知られ熊本城や名護屋城、蔚山倭城、江戸城、名古屋城など数々の城の築城に携わった。