There are some 800 thermal springs in the resort area surrounding Ito. These springs—and the beautiful, rocky, indented coastline nearby—remain the resort's major attractions, although there are plenty of interesting sights here. Some 150 hotels and inns serve the area.
Ito traces its history of associations with the West to 1604, when William Adams (1564–1620), the Englishman whose adventures served as the basis for James Clavell's novel Shogun, came ashore.
Four years earlier Adams had beached his disabled Dutch vessel, De Liefde, on the shores of the southwestern island of Kyushu and become the first Englishman to set foot on Japan. The authorities, believing that he and his men were Portuguese pirates, put Adams in prison, but he was eventually befriended by the shogun Ieyasu Tokugawa, who brought him to Edo (present-day Tokyo) and granted him an estate. Ieyasu appointed Adams his adviser on foreign affairs. The English castaway taught mathematics, geography, gunnery, and navigation to shogunate officials and in 1604 was ordered to build an 80-ton Western-style ship. Pleased with this venture, Ieyasu ordered the construction of a larger oceangoing vessel. These two ships were built at Ito, where Adams lived from 1605 to 1610.
This history was largely forgotten until British Commonwealth occupation forces began coming to Ito for rest and recuperation after World War II. Adams's memory was revived, and since then the Anjin Festival (the Japanese gave Adams the name anjin, which means "pilot") has been held in his honor every August. A monument to the Englishman stands at the mouth of the river.