The Cedar Avenue of Nikkō (日光杉並木, Nikkō suginami-ki) is the popular name for three separate tree-lined sections of roads in the city of Nikkō, Tochigi in the northern Kantō region of Japan. These roads are the Nikkō Kaidō, Nikkō Reiheishi Kaidō and Aizu Nishi Kaidō and the 13,000 cryptomeria trees lining a total of 35.41 kilometers (22.00 mi) of these roads form a monumental approach to the Shrines and Temples of Nikkō. Although it is not a single continuous road, the "Cedar Avenue of Nikki" is listed in the Guinness Book of World Records as the longest tree-lined avenue in the world. and is the only cultural property designated by the Japanese Government as both a Special Historic Site and a Special Natural Monument.