The mayor of Himeji, western Japan, has said he is contemplating “quadrupling” entry fees exclusively for foreign tourists visiting Himeji Castle, a UNESCO World Heritage site, in response to increasing inbound tourism. The city government acknowledged Monday that Mayor Hideyasu Kiyomoto made the remark the previous day at an international symposium in Himeji, Hyogo Prefecture. The admission fee for the castle, also a national treasure with part of its wooden structure dating back to the early 17th century, is currently set at 1,000 yen ($6.3) for a person aged 18 or above. “We would like to c…