Among the preservation districts of classic architecture, the Minister of Education, Culture, Sports, Science and Technology can designate the ones judged to be especially important as preservation districts of "important cluster of classical buildings protection area." (Article　144 Clause 1).
伝統的建造物群保存地区の中から特に価値が高いものを文部科学大臣が重要伝統的建造物群保存地区に選定することができる（第144条第1項）。