Asamushi Onsen (浅虫温泉) is the site of a hot spring, located in Aomori City in Aomori Prefecture, Japan. It was developed as the downtown beside the onsen town and is sometimes known as "Atami in Tohoku" after the famous Atami Onsen in mid-Japan. According to tradition, the hot spring was discovered by Ennin in 876, during the Heian period. The hot spring was first used for steaming (mushi) hemp (Cannabis or asa), leading to the name, though the kanji character used for the name differs. When Hōnen visited in 1190, he popularized the custom of bathing in the hot spring.