In 1975, WMRT began the planning phase of a project for the Shah of Iran, an environmental park to be called Pardisan, unlike any the world had ever seen. The park was to demonstrate the heritage of the Iranian people, as well as to illustrate the major ecosystems of the world. McHarg was enthusiastic about this project, and greatly invested in the work. The other partners of the firm, however, believed the project to be a significant risk, although Iran was wealthy from the sale of oil. Their concerns became justified when the Shah was overthrown and the firm was left with a large amount of debt from the project. Located in a north western area of Tehran, Pardisan still remains as a large, relatively un-designed, green space but McHarg's designs were never implemented.