Shibuya-ku is the name of the ward located in the East of Tokyo. Shibuya is the name of the a sub-area arround the JR Shibuya Station located in Shibuya-ku.
Largely a commercial and entertainment district, Shibuya has achieved great popularity among young people in the last 30 years. Shibuya is also famous for its intersection crossing, reportedly the world's busiest, which is located in front of Shibuya Station and uses a four-way stop to allow pedestrians to inundate the entire intersection.
Two photos showing the crowd close to the Japan Railway (JR) Shibuya station with a plethora of neon advertising signs and screens in the background were added under the refenrence #001-000333