Japan’s two largest hotel booking platforms—Rakuten Travel and Jalan.net—simultaneously launched a feature site called “Kosen Yado Map” (Ancient Coin Inn Map) in May 2026, listing over 250 accommodations located in Edo-era post towns, castle towns, and port towns that offer exhibits and experiences related to historical currency. Within two weeks of launch, reservations tripled compared to the same period last year, confirming that the ancient coin boom is generating significant ripple effects in the tourism and accommodation market.