This article explores the history of tattoos in Japan, their cultural significance, and why they are not allowed in traditional Japanese bathhouses. It explains that the ban is largely due to concerns over public safety and hygiene, as well as a stigma surrounding tattoos that has been perpetuated by their association with organized crime groups such as the yakuza. The article also discusses how visitors to Japan can still enjoy traditional baths at "tattoo friendly" establishments or hotel spas.