When visiting an onsen in Hiroshima, traditional Japanese etiquette requires visitors to clean themselves thoroughly before entering the bath. Tattoos may not be allowed as they may be associated with organized crime. Once in the bath, visitors should submerge themselves slowly to adjust to the water temperature. To create a peaceful atmosphere, noise should be kept to a minimum. Swimming or doing laundry in the bath is frowned upon. Finally, one is expected to leave the water without a towel, as it is considered impolite to rinse off the minerals of the hot springs.