The United Nations University (UNU) is the think tank and academic arm of the United Nations. Headquartered in Shibuya, Tokyo, Japan, with diplomatic status as a UN institution, its mission is to help resolve global issues related to human development and welfare through collaborative research and education.

Shibuya is a special ward in the Tokyo Metropolis, Japan. A major commercial and finance center, Shibuya houses two of the busiest railway stations in the world, Shibuya Station and Shinjuku Station. As of January 1, 2024, Shibuya Ward has an estimated population of 230,609 in 142,443 households and a population density of 15,262.01 people per km2. The total area is 15.11 km2. Notable neighborhoods and districts of Shibuya include Harajuku, Ebisu, Omotesandō, Yoyogi and Sendagaya. "Shibuya" is also commonly used to refer to the area surrounding Shibuya Station, an area known as a major center for Japanese fashion and youth culture, and one of Tokyo's most popular nightlife areas.