The Shinjuku Gyo-en Greenhouse is a greenhouse in Shinjuku Gyo-en, Shinjuku, Tokyo, Japan. It was built in 1950 and displays more than 1,700 tropical and subtropical plant species, as of 2016. The Shinjuku Gyo-en Greenhouse was built on the site of a private mansion, property of daimyō Naitō Nobunari.Wikipedia