Book excerpt: In the midst of a twenty-first-century high-tech boom and in one of the most expensive real-estate markets in the world, the city of San Francisco and its developers have proposed an ambitious model of military base reuse and green urbanism-a new eco-city of about 19,000 residents on Treasure Island and Yerba Buena Island. The project is synonymous with a growing global trend toward large-scale, capital-intensive land developments envisioned around ideas of sustainability and spectacular place making. Seen against the successive history of development, future visions for Treasure Island are part of a process of building and erasure that Horiuchi and Sankalia call urban reinventions. This is a process of radical change in which artificial, detached, and delimited sites such as Treasure Island provide an ideal plane for tabula rasa planning driven by property, capital, and state control.