Marunouchi Square, located directly in front of Tokyo Station's Marunouchi Building, is one of the largest open plazas in central Tokyo, spanning about 6,500 square meters. It was redesigned and reopened in December 2017 as part of the station's massive 10-year restoration project, blending modern minimalism with views of the 1914 station facade. The square is lined with Japanese zelkova trees, creating a rare green corridor in the business-heavy Marunouchi district. Every day, over 500,000 passengers pass through Tokyo Station, making the square both a commuter hub and a scenic landmark.
The webcam is positioned to face the historic red-brick Marunouchi Building of Tokyo Station, giving viewers a direct look at its facade. Through the feed, people can watch the stone plaza, rows of trees, and the constant stream of commuters and visitors moving through the area. Depending on the time of day, viewers also see seasonal illuminations, shifting daylight, and the lively urban atmosphere of one of Tokyo's busiest hubs.