Nikkō Tōshō-gū
is the name of a complex Shinto shrine structure in which the "haiden", or worship hall, and the honden, or main sanctuary, are interconnected under the same roof in the shape of an H. One of the oldest examples of "gongen-zukuri" is Kitano Tenmangū in Kyoto. The name comes from Nikkō Tōshō-gū in Nikkō because it enshrines the Tōshō Daigongen and adopts this structure.