Sensō-ji (金龍山浅草寺, Kinryū-zan Sensō-ji) is an ancient Buddhist temple located in Asakusa, Taito, Tokyo. It is Tokyo's oldest temple, and one of its most significant. Formerly associated with the Tendai sect, it became independent after World War II. Adjacent to the temple is a Shinto shrine, the Asakusa Shrine.
Sensō-ji is the focus of Tokyo's largest and most popular matsuri (Shinto festival), Sanja Matsuri. This takes place over 3–4 days in late spring, and sees the surrounding streets closed to traffic from dawn until late evening.
Dominating the entrance to the temple is the Kaminarimon or "Thunder Gate". This imposing Buddhist structure features a massive paper lantern dramatically painted in vivid red-and-black tones to suggest thunderclouds and lightning. Within the precincts stand a stately five-story pagoda and the main hall, devoted to Kannon Bosatsu.