Shinjuku Green Tower Building, High-rise building in Nishi Shinjuku, Japan.

Shinjuku Green Tower Building is a high-rise tower with 28 floors above ground and 4 basement levels, rising 110 meters into Tokyo's skyline. The structure houses office space for international companies and connects directly to multiple subway lines.

The building was constructed in 1986 during Tokyo's period of major modernization when the city was establishing itself as a global financial hub. Its creation reflects the wave of large-scale development projects that transformed the city during that era.

The building sits in the heart of Shinjuku's business district and shapes the area's modern skyline. It functions as part of the dense urban fabric that draws workers daily and anchors Tokyo's commercial center.

The building is centrally located in Nishi Shinjuku and is easily accessible by public transit, serving both visitors and workers. Its connection to multiple subway stations makes it a well-connected hub within the business center.

The rooftop heliport was the first installed in a private building in Japan; its stairway sits in the 27th-floor north corridor behind the emergency elevator, marked by a yellow plate with red lettering and closed except in emergencies. The exterior's muted green, chosen against the era's taboo on green facades, shifts with the sunlight and earned the Japan Color Research Institute's Public Color Award.