The Postal Museum Japan,displays and introduce collections related to postal service and communications.Its standing-exhibition zone employs displays and images divided into what are called Seven Worlds related to the story and history of postal service.In addition,the museum houses a zone for featured exhibitions,the Letter Lounge,an Event Space,Museum Shop,and Museum Post Office.Its exhibitions include a display of about 330,000 postage stamps,the largest such collection in Japan,and about 400 items related to Japanese and overseas postal-service administration.